Feasibility Report for 2020 Roadway Rehabilitation Project ... Report - 2020 Rehab - Savanna … · 2020 Roadway Rehabilitation Project – Savanna Oaks Area ǀ BMI Project No. N12.118928

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DRAFT

Feasibility Report for

2020 Roadway Rehabilitation Project –

Savanna Oaks Area City of Woodbury

City Project No. 16-2019-03

BMI Project No. N12.118928

October 29, 2019

Submitted by:

Bolton & Menk, Inc.

2035 County Road D East

Maplewood, MN 55109

P: 651-704-9970

F: 651-704-9971

Prepared by: Bolton & Menk, Inc. Certification

2020 Roadway Rehabilitation Project – Savanna Oaks Area ǀ BMI Project No. N12.118928

Certification

I hereby certify that this plan, specification or report was

prepared by me or under my direct supervision, and that I

am a duly Licensed Professional Engineer under the laws of

the State of Minnesota.

By:

Michael Nill, P.E.

License No. 26914

Date: October 29, 2019

Prepared by: Bolton & Menk, Inc. Table of Contents

2020 Roadway Rehabilitation Project – Savanna Oaks Area ǀ BMI Project No. N12.118928

Table of Contents I. INTRODUCTION ...................................................................................................................... 1

II. REQUIRED IMPROVEMENTS ................................................................................................... 2

SANITARY SEWER ......................................................................................................... 2

WATER MAIN ................................................................................................................ 2

STORM SEWER.............................................................................................................. 2

STORM WATER QUALITY IMPROVEMENTS .................................................................. 2

STREETS ........................................................................................................................ 2

III. PERMITS AND EASEMENT REQUIRED .................................................................................... 3

IV. ESTIMATED COSTS .................................................................................................................. 3

V. COST ALLOCATION ................................................................................................................. 4

COMMERCIAL PROPERTIES .......................................................................................... 5

RESIDENTIAL AND PUBLIC PARK/OPEN SPACE PROPERTIES ........................................ 7

VI. FINANCING ........................................................................................................................... 12

VII. SCHEDULE ............................................................................................................................. 12

VIII. FEASIBILITY, NECESSITY, AND COST EFFECTIVENESS ........................................................... 13

IX. PUBLIC HEARING .................................................................................................................. 13

X. RECOMMENDATIONS ........................................................................................................... 14

Appendix APPENDIX A: FIGURES

APPENDIX B: PRELIMINARY OPINION OF PROBABLE COSTS

Prepared by: Bolton & Menk, Inc.

2020 Roadway Rehabilitation Project – Savanna Oaks Area ǀ BMI Project No. N12.118928 Page 1

I. INTRODUCTION

The City of Woodbury is planning to rehabilitate several streets during the 2020 construction

season, in accordance with its Capital Improvement Plan. There are approximately 5 miles of

public streets scheduled for rehabilitation as part of this project, which consists of several

locations within the City. This report focuses on the Savanna Oaks area, which contains several

residential developments bounded by Pioneer Drive on the north and east, Radio Drive on the

west, and Lake Road on the south. There are approximately 3.3 miles of residential streets that

are proposed to be rehabilitated as shown on Figures 1 and 2 in Appendix A.

The majority of the streets and utilities that serve the Savanna Oaks area were constructed in the

mid to late 1990s. This neighborhood consists of a mix of single-family residential, multi-family

residential, and commercial properties, along with several public park and open space properties.

As part of the City’s pavement management program, selected neighborhoods have been

analyzed relative to pavement condition and possible improvements. The aforementioned area is

included in the City’s current Capital Improvement Plan as a 2020 Roadway Rehabilitation project.

The majority of the residential streets within the proposed project are 30 to 32 feet wide (from

face of curb to face of curb) with D412 concrete curb and gutter. The Pavement Condition Index

(PCI) of the streets ranges from 26 to 84, with an overall average of 59. These neighborhoods have

experienced high levels of stripping under chip seals. Pothole repairs and thin overlays have been

performed to keep the roads in a drivable and relatively smooth condition. A significant amount of

street maintenance funds are used or are anticipated in upcoming maintenance cycles in these

areas.

A neighborhood meeting was held with the adjacent property owners on August 1, 2019. The

proposed project scope, costs, and funding sources were discussed at the meeting. Property

owners had an opportunity to comment on the project and ask questions. Additional

neighborhood meetings will be held during the design process to allow for additional input from

the property owners and prior to the start of construction.

This report includes a discussion of the improvements required for this street rehabilitation

project. It also provides preliminary cost estimates for the proposed improvements and identifies

funding sources to finance the work.



II. REQUIRED IMPROVEMENTS

SANITARY SEWER

The existing sanitary sewer consists of polyvinyl chloride (PVC) and vitrified clay pipe (VCP).

The City has recently televised the pipe to determine their condition. Problems typically

encountered were cracked or broken pipes, roots, and leaking joints. Costs have been

included in this report to account for these minor inline repairs. The televising reports will

be reviewed during the final design process to determine the actual extent of inline repairs

needed.

The sanitary sewer manhole castings will be salvaged and reinstalled. Existing concrete

adjusting rings will be replaced with new high-density polyethylene (HDPE) adjusting rings to

conform to current City standards.

WATER MAIN

The water mains within the project area are ductile iron pipes (DIP) and are in good

condition. Valve boxes that are damaged would be replaced with a new top section as

necessary. In addition, all hydrants would be sandblasted, painted, and equipped with a

new locating flag.

STORM SEWER

The existing storm sewer consists of various sizes of reinforced concrete pipe (RCP). The City

recently televised all the pipe within the project area. Some minor repairs are needed. Costs

have been included in this report to account for cracked or broken pipes and one protruding

tap.

Structures in poor condition will be lined or replaced to conform to current city standards.

The storm sewer manhole castings and catch basin castings will be salvaged and reinstalled,

or replaced if damaged. Existing concrete adjusting rings will be replaced with new high-

density polyethylene (HDPE) adjusting rings to conform to current City standards.

STORM WATER QUALITY IMPROVEMENTS

City staff is currently reviewing stormwater quality improvement needs within the project

area. A portion of these improvements may be included in the 2020 Roadway Rehabilitation

project, with the remaining improvements constructed in the winter of 2019/2020 under a

separate project process. The scope of these improvements within the 2020 Roadway

Rehabilitation project will be determined during the design phase of the project.

STREETS

According to the record plans, the existing street section includes 8 inches of class 5 gravel

base and 3 inches of bituminous pavement. The existing street section is similar to the City's

current standard residential street section. Based on the condition of the existing

pavement, the proposed rehabilitation methods consist of a combination of full pavement

removal and replacement and 1.5-inch thick full width mill/overlay.



The condition of the existing concrete curb and gutter varies on each street. Approximately

10% of streets are recommended for full curb replacement, and 90% of the streets are

recommended for spot curb repairs.

All existing trails and pedestrian ramps have been evaluated. Costs have been included in

this report to update all pedestrian ramps to the current Americans with Disabilities Act

(ADA) standards. In addition, the 8-foot wide bituminous trails along Savanna Oaks Lane,

Timberwood Road, Prairie Oak Trail, and Woodbury Crossing would be rehabilitated by

removing and replacing the existing pavement. Where possible, the trail would be widened

to 10 feet. New trail segments are proposed along Woodbury Crossing, from Prairie Oak

Trail west to the cul-de-sac and along the east side of Magnolia Drive, from Lake Road to

Savanna Oaks Lane.

III. PERMITS AND EASEMENT REQUIRED

All streets in the project area are located within the South Washington Watershed District

(SWWD). Because there will be no disturbance to the existing subgrade, a permit is not required;

however, plans will be submitted to the watershed district for review. Because this project is

considered a maintenance project that would create less than one acre of new impervious

surfaces and would not change the existing grade, hydraulics, or purpose of the roadway, the

MPCA Construction Stormwater permit is not required. A permit from Washington County would

be required if work in performed within their right-of-way on Lori Lane or Horseshoe Road at

Radio Drive (C.S.A.H. 13).

All proposed work is located on public right-of-way or City owned land. Permanent or temporary

easements are not anticipated to be necessary to accomplish the proposed improvements.

IV. ESTIMATED COSTS

Detailed estimates of probable construction costs have been prepared for the improvements

described in this report and are included in Appendix B. All costs are based on anticipated unit

prices for the 2020 construction season and include a 25% percent allowance for engineering,

administrative costs, and financing. Following is an overall summary of the estimated costs:

Estimated Project Costs

Proposed Improvements Total Costs

Sanitary Sewer $141,100

Water Main $130,500

Storm Sewer $156,000

Storm Water Quality $145,300

Streets $2,987,600

Total Estimated Project Costs $3,560,500



V. COST ALLOCATION

All streets that are proposed to be rehabilitated are considered residential streets. The properties

adjacent to the residential streets are a mix of single-family residential, multi-family residential,

commercial, and public park/open space. Following is a discussion of the proposed assessment

policy for the properties adjacent to the residential streets.

Street and Storm Sewer: Per the City’s current assessment policy, residential properties that have

front yard frontage or private street/driveway access to a residential roadway being rehabilitated

would be responsible for 33% of the street and storm sewer costs on a per residential lot basis or

the minimum assessment as identified based on the construction cost index, whichever is greater.

Commercial properties and public park/open space properties that have frontage on a

rehabilitated roadway would be assigned 100% of the street and storm sewer costs. The costs

would be assigned to the park and open space properties on an equivalent residential unit basis.

The City would be responsible for all remaining street and storm sewer costs. The City would also

be responsible for 100% of the storm water quality improvements.

Sanitary Sewer and Water Main: The City would finance 100% of the sanitary sewer and water

main costs.

The aforementioned assessment procedure is consistent with current City policy.

There are several different types of properties adjacent to the residential streets within these

neighborhoods. A breakdown of the various types of properties is shown below and on Figure 2 in

Appendix A:

Adjacent Properties

Type of Property

Number of

Properties

Residential (Single Family) 340

Residential (Multi-Family) 136

Commercial 4

Public Park/Open Space NA

Total Number of Properties 480

As per City policy, in areas where multiple land uses exist, 50% of the proportional share would be

assigned equally to each individual residential property or equivalent residential unit without

reference to lot width, corner lot location, or subdivision. The remaining 50% of the assessment

would be based on the proportion of street frontage of each land use divided amongst the units in

that land use. This assessment method applies to the public park/open space properties as well.

This assessment method is consistent with current City policy.



Following is a discussion of how the proposed project costs would be assigned to the various

adjacent properties per the city’s current assessment policy.

COMMERCIAL PROPERTIES

As mentioned previously in this report, there are four commercial properties along Woodbury

Crossing. For these properties, the appropriate percentage of improvement costs would be

assigned based on its adjacent footage on the street being improved. The cost would be

determined by multiplying the cost per adjacent foot by the length of adjacent footage.

There are 32,218 feet of adjacent footage within this project, of which 670 feet is commercial

property. A breakdown of the commercial property frontage is shown in the following table:

Adjacent Footage of Commercial Properties

PID Owner Name

Adjacent

Footage (LF)

16-028-21-13-0085 Woodbury Crossing Offices LLP 277

16-028-21-24-0091 Robert Engstrom Companies 176

16-028-21-24-0092 Pioneer Radio Property LLC 0

16-028-21-24-0095 MSA Building Co 217

Totals 670

Dividing the estimated project costs by the total adjacent footage and applying the city’s current

assessment policy results in the following assessment per adjacent foot for the commercial

property:

Assessment Rates (Commercial Properties)

Item

Estimated

Project

Cost

Total

Adjacent

Footage

Cost Per

Adjacent

Foot

Assessable

Percent

Assessment

per

Adjacent

Foot

Sanitary Sewer $141,100 32,218 $4.38 0% $0.00

Water Main $130,500 32,218 $4.05 0% $0.00

Storm Sewer $156,000 32,218 $4.84 100% $4.84

Storm Water Quality $145,300 32,218 $4.51 0% $0.00

Streets $2,987,600 32,218 $92.73 100% $92.73

Totals $3,560,500 $110.51 $97.57

Applying the assessment rates shown in the previous table to the assessable adjacent footage

results in the following assessment summary table for the commercial property:



Assessment Summary (Commercial Properties)

Sanitary Sewer

Assessment

per

Adjacent

Foot

Total

Commercial

Assessment

(670 LF)

Remaining

Project

Costs

Total

Project Costs

Sanitary Sewer $0.00 $0.00 $141,100.00 $141,100.00

Water Main $0.00 $0.00 $130,500.00 $130,500.00

Storm Sewer $4.84 $3,242.80 $152,757.20 $156,000.00

Storm Water Quality $0.00 $0.00 $145,300.00 $145,300.00

Streets (Not Including Aprons) $92.73 $62,129.10 $2,925,470.90 $2,987,600.00

Total Project Amounts $97.57 $65,371.90 $3,495,128.10 $3,560,500.00

The total commercial assessment in the previous table would be applied to the commercial

properties based on their adjacent footage. However, there is one parcel (Pioneer Radio Property

LLC) in the southeast corner of Radio Drive and Pioneer Drive that is irregular, as it has no adjacent

frontage. Access to the site is from Woodbury Crossing via the adjacent property’s parking lot

(MSA Building Co). The City’s current assessment policy does not address this type of parcel.

Therefore, it is proposed that the assessments for these two parcels be applied to their total

frontage and divided proportionately based on their area. These two parcels are listed in the table

below, along with their adjacent footage and percent of area:

Irregular Parcels

Geocode Owner

Adjacent

Footage

Area

(SF)

Area

(%)

16-028-21-24-0092 Pioneer Radio Property LLC 0 48,787 24.8%

16-028-21-24-0095 MSA Building Co 217 147,604 75.2%

Totals 217 196,391 100%

Applying the assessment rates as previously described results in the following preliminary

assessment roll:

Preliminary Assessment Roll

Geocode Owner Name

Assessable

Footage

Area

(%)

Total

Assessment

($97.57/LF)

16-028-21-13-0085 Woodbury Crossing Offices LLP 277 NA $27,026.89

16-028-21-24-0091 Robert Engstrom Companies 176 NA $17,172.32

16-028-21-24-0092 Pioneer Radio Property LLC 217

24.8% $5,259.67

16-028-21-24-0095 MSA Building Co 75.2% $15,913.02

Totals 670 $65,371.90



RESIDENTIAL AND PUBLIC PARK/OPEN SPACE PROPERTIES

The remaining project costs of $3,495,128.10 as shown in the previous Assessment

Summary table would be assigned to the remaining residential and public park/open space

properties per the city’s current assessment policy as described in the following paragraphs.

As mentioned previously in this report in the Adjacent Properties table and as shown on

Figure 2 in Appendix A, there are a total of 476 existing residential properties in the project

area that have either front yard frontage on a roadway being improved or have direct access

via a private street to a roadway being improved and, therefore, would be assigned 33% of

the street and storm sewer project costs per the City's assessment policy. The residential

properties consist of 340 single-family homes and 136 multi-family homes. For purposes of

assessing, each residential property would be considered one equivalent residential unit

(ERU), resulting in 476 ERUs.

There are several locations where city-owned park property or open space is adjacent to a

roadway proposed to be rehabilitated. The amount of adjacent frontage of the combined

park and open space properties is 269 feet. It is proposed to convert the total adjacent

footage of the public park/open space properties to ERU’s based on an average residential

lot width within the project area of 60 feet. This results in 4 ERUs for the public park/open

space properties (269 feet of frontage ÷ 60 feet per residential lot = 4.5 ERUs). Note that the

ERU’s are rounded down to the nearest unit since the portion of an additional lot would not

be buildable. The City would be 100% responsible for all costs assigned to the 4 public

park/open space ERU’s above.

The total ERU’s to which the various remaining project costs are to be assigned is shown in

the following table:

Equivalent Residential Units (ERU's)

Type of Property ERUs

Residential (Single Family) 340

Residential (Multi-Family) 136

Public Park/Open Space 4

Total ERU's 480



Half of the remaining project costs (i.e. total project costs less the amount assigned previously in

this report to the commercial properties) would be assigned equally to each ERU. The Cost Per

ERU would be calculated by dividing 50% of the remaining project costs for each improvement by

the total number of ERUs. The City’s current assessment policy would be applied to the Cost per

ERU resulting in the following Assessment per ERU:

Table A - Assessment per ERU (50%)

(Residential and Public Park/Open Space Properties)

Item

50% of

Remaining

Project Costs

Number

of ERUs

Total Cost

per ERU

Residential Public Park/Open Space

Assessable

Percent

Assessment

per ERU

Assessable

Percent

Assessment

per ERU

Sanitary Sewer $70,550.00 480 $146.98 0% $0.00 0% $0.00

Water Main $65,250.00 480 $135.94 0% $0.00 0% $0.00

Storm Sewer $76,378.60 480 $159.12 33% $52.51 100% $159.12

Storm Water Quality $72,650.00 480 $151.35 0% $0.00 0% $0.00

Streets $1,462,735.45 480 $3,047.37 33% $1,005.63 100% $3,047.37

Totals $1,747,564.05 $3,640.76 $1,058.14 $3,206.49

The other half of the remaining project costs would be assigned equally to each residential and

public park/open space ERU based on the percentage of frontage for each property type. The

frontage calculations are shown in the following table:

Frontage Calculations

Type of Property

Length of

Frontage (LF)

% of Total

Frontage

Residential (Single Family) 26,537 84.1%

Residential (Multi-Family) 4,742 15.0%

Public Park/Open Space 269 0.9%

Totals 31,548 100%



Applying the percentage of each frontage to half of the remaining project costs and dividing by

the number of ERU’s per property type results in the following table of assessments:

Table B - Assessment per ERU Based on Property Frontage (50%)


Item

50% of

Remaining

Project Cost

% of

Total

Frontage

# of

ERUs

Total Cost

per ERU

Assessable

Percent

Assessment

per ERU

Single-Family

Sanitary Sewer $70,550.00 84.10% 340 $174.51 0% $0.00

Water Main $65,250.00 84.10% 340 $161.40 0% $0.00

Storm Sewer $76,378.60 84.10% 340 $188.92 33% $62.34

Storm Water Quality $72,650.00 84.10% 340 $179.70 0% $0.00

Streets $1,462,735.45 84.10% 340 $3,618.12 33% $1,193.98

Totals - Single-Family $1,747,564.05 $4,322.65 $1,256.32

Multi-Family

Sanitary Sewer $70,550.00 15.00% 136 $77.81 0% $0.00

Water Main $65,250.00 15.00% 136 $71.97 0% $0.00

Storm Sewer $76,378.60 15.00% 136 $84.24 33% $27.80


Streets $1,462,735.45 15.00% 136 $1,613.31 33% $532.39

Totals - Multi-Family $1,747,564.05 $1,927.46 $560.19

Public Park and Open Space

Sanitary Sewer $70,550.00 0.90% 4 $158.74 0% $0.00

Water Main $65,250.00 0.90% 4 $146.81 0% $0.00

Storm Sewer $76,378.60 0.90% 4 $171.85 100% $171.85


Streets $1,462,735.45 0.90% 4 $3,291.15 100% $3,291.15

Totals - Public Park & Open Space $1,747,564.05 $3,932.01 $3,463.00



Combining the assessments per ERU from previous Table A and Table B results in the following

total assessment rates for each type of property:

Table A + B

Total Assessment Rate per Property Type


Item

Single-Family

Assessment

($/ERU)

Multi-Family

Assessment

($/ERU)

Public Park/ Open

Space

Assessment

($/ERU)

Sanitary Sewer $0.00 $0.00 $0.00

Water Main $0.00 $0.00 $0.00

Storm Sewer $114.85 $80.31 $330.97

Storm Water Quality $0.00 $0.00 $0.00

Streets $2,199.61 $1,538.02 $6,338.52

Total Cost per ERU $2,314.46 $1,618.33 $6,669.49

The City of Woodbury has implemented a minimum residential assessment rate for rehabilitation

projects. The rate applies to the street and storm sewer portions only. As of August 2018, the

rates were $2,696 per single-family unit and $1,347 per multi-family unit with 3 to 4.9 units per

acre. Based on the Engineering News Record (ENR) Construction Cost Index for Minneapolis, the

current rates updated from August 2018 to August 2019 would be:

$2,696 x (13,998.80 ÷ 13031.83) = $2,689 per Single Family

$1,347 x (12,998.80 ÷ 13031.83) = $1,344 per Multi-Family

Based on a previous table, the total single-family assessment for storm sewer and streets is

$2,314.46 per unit, which is less than the minimum assessment of $2,689 per unit. Therefore, the

minimum assessment would be applied to the single-family homes.

The total multi-family assessment for storm sewer and streets is $1,618.33 per unit, which is more

than the minimum assessment of $1,344 per unit. Therefore, the minimum assessment wouldn’t

apply to the multi-family homes.



Applying the minimum single-family assessment of $2,689 proportionally to the storm sewer and

streets in the previous table results in the following table of updated assessments:

Table A + B

UPDATED - Total Assessment Rate per Property Type


(Minimum Applied)

Single-Family

Assessment

($/ERU)

(Regular)

Multi-Family

Assessment

($/ERU)

Public Park/

Open Space

Assessment

($/ERU)

Sanitary Sewer $0.00 $0.00 $0.00

Water Main $0.00 $0.00 $0.00

Storm Sewer $133.44 $80.31 $330.97

Storm Water Quality $0.00 $0.00 $0.00

Streets $2,555.56 $1,538.02 $6,338.52

Total Cost per ERU $2,689.00 $1,618.33 $6,669.49

Applying the assessment rates shown in the previous table to each assessable residential property

type results in the following assessment summary table. Note that the City would be responsible

for 100% of the costs assigned to the Public Park & Open Space ERUs. Therefore, these costs are

included in the Remaining City Costs column:

Assessment Summary


Single-

Family

(340 ERUs)

Multi-Family

(136 ERUs)

Remaining

City Costs

Remaining

Project Costs

Sanitary Sewer $0.00 $0.00 $141,100.00 $141,100.00

Water Main $0.00 $0.00 $130,500.00 $130,500.00

Storm Sewer $45,368.15 $10,922.16 $96,466.89 $152,757.20

Storm Water Quality $0.00 $0.00 $145,300.00 $145,300.00

Streets $868,891.85 $209,170.72 $1,847,408.33 $2,925,470.90

Total Project Amounts $914,260.00 $220,092.88 $2,360,775.22 $3,495,128.10



VI. FINANCING

Based on the previous Assessment Summary table, the total project cost to the City would be

$2,360,775.22. Various funds would be used to finance the City’s portion of each improvement

cost as shown in the following financing summary table:

Financing Summary

Item City Costs Fund

Sanitary Sewer $141,100.00 Water and Sewer Utility Fund

Water Main $130,500.00 Water and Sewer Utility Fund

Storm Sewer $96,466.89 Storm Water Utility Fund

Storm Water Quality $145,300.00 Storm Water Utility Fund (Non-Degradation Retrofit for

Street Rehabilitation Projects allocation)

Streets $1,847,408.33 Street Reconstruction / Maintenance Fund

Sub-Total (City

Costs) $2,360,775.22

Assessments $1,199,724.78

Total Project Costs $3,560,500.00

Assessments would be levied against the benefitting residential properties in accordance with the

City’s current assessment policy.

VII. SCHEDULE

The following schedule allows for construction to be completed during the 2020 construction

season:

Proposed Project Schedule

Order preliminary report June 26, 2019

Neighborhood meeting #1 August 1, 2019

Neighborhood meeting #2 October 29, 2019

Approve preliminary report, public improvement hearing, order

project, authorize plans/specs November 6, 2019

Approve plans/specs, set bid date December 2019

Advertise in local paper January 2020

Open bids January 2020

Neighborhood meeting #3 March 2020

Assessment hearing, award contract March 2020

Neighborhood meeting #4 April 2020

Begin construction May 2020

Complete construction October 2020



VIII. FEASIBILITY, NECESSITY, AND COST EFFECTIVENESS

The following table compares the cost per linear foot of this project versus the costs shown in the

preliminary reports of other similar rehabilitation projects recently constructed within the City:

Project Cost Comparison

Project

Cost per

Linear Foot

Preliminary

Report

Updated Per

Construction

Cost Index

2017 Roadway Rehabilitation - Residential (West Area) $154 $167

2018 Roadway Rehabilitation - Eagle Valley Area $148 $153

2019 Roadway Rehabilitation - Meadowood Area $175 $175

2020 Roadway Rehabilitation - Savanna Oaks Area $206 $206

Based on the previous table, the cost to rehabilitate the streets within the proposed 2020 project

area is higher than previous projects. This is due to the fact that costs for concrete and pavement

have increased substantially over the last year, and these costs have been adjusted when

estimating 2020 construction costs.

This project is financially feasible. Financial responsibilities have been determined based on

estimated project costs and adopted City policy. Funding sources consist of assessments to

benefitted properties and use of existing designated City funds.

The deteriorated condition of the pavement surface, stable condition of the subgrade, and

relatively good condition of the concrete curb and gutter suggest that a combination of full

pavement removal and replacement and mill/overlay be performed. The improvements are cost

effective as they utilize the existing subgrade and keep existing curb and pavement wherever

possible.

From an engineering standpoint, this project is feasible, necessary, and cost effective.

IX. PUBLIC HEARING

This project will be partially funded by assessing the benefitted properties. Therefore, the City will

need to hold a public improvement hearing to receive comments on the proposed project and to

determine what further action should be taken. For purposes of the hearing, the following

information should be utilized:

Estimated Cost: $3,560,500.00

Total Assessed Cost: $1,199,724.78



Benefited Area:

All parcels within the southeast quarter of the northwest quarter of Section 21, the southwest

quarter of the northeast quarter of Section 21, the southwest quarter of Section 21, and the west

half of the southeast quarter of Section 21, Township 28N, Range 21W, City of Woodbury, County

of Washington, State of Minnesota that have direct driveway or private street access to Aldrich

Trail, Lori Lane, Horseshoe Road, Horseshoe Lane, Timberwood Court, Timberwood Road, Prairie

Oak Trail, Woodbury Crossing, Oak Ridge Trail, Savanna Oaks Lane, Savanna Oaks Alcove, Savanna

Oaks Bay, or Magnolia Drive.

X. RECOMMENDATIONS

It is recommended that this report be used as a guide for the layout, design and cost allocation for

the public improvements to be made as part of the 2020 Roadway Rehabilitation – Savanna Oaks

Area project. It is further recommended that the owners of properties within the project limits be

properly notified of the proposed improvements in order to provide comment.

APPENDIX A: FIGURES

Radio D

rive (C

SAH 13

)

Lake Road

Pione

er Dr

ive

Timbe

rlea D

rive

T. Ct

Inter

lache

n Park

way

R. Ct

Afton Road R. A

lc

Sava

nna O

aks L

ane

Juniper Lane

Sequoia Road

B. Ct

Torrey Drive

Magno

lia

Brittany Lane

W. Crsg

Timber

wood

M.C.

Alco

veLori L

ane

Boulder Ridge Road

Tower Drive

Ambe

rwoo

d Driv

e

North

View

B.R. Ln

S. CtH. Rd

Acadia Road

Oak R

idge T

rail

Horseshoe Lane

A. B

ay

T. Cir

Aldrich Trail

Hidden Glen Cove

S.O. Bay

Timberwood Road

Prairie Oak Trail

LegendSavanna Oaks Area

2020 ROADWAY REHABILITATION PROJECTFIGURE 1 - LOCATION MAP

SAVANNA OAKS AREA F

MSA Building Co.1602821240095

Pioneer Radio Property LLC1602821240095

Woodbury Crossing Offices LLP1602821130085

Robert Engstrom Companies1602821240091

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Savanna Oaks Lane

Juniper Lane

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Brittany Lane

Magnolia

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Boulder Ridge Road

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Marsh Creek Road

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Aldrich Trail

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Hidden Glen Cove

Acadia Road

S.O. Bay

Timberw

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S.O. Pass

Promenade Lane

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N.V. A

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Marsh Creek Road

Document Path: K:\Mike H\2020 RRP\2020 Roadway Rehab Areas - Savanna Oaks Benifitted Properties.mxd

LegendSavanna Oaks AreaSingle Family Home (340)Multi-Family Home (136)Commercial Property (4)Park and Open Space

2020 ROADWAY REHABILITATION PROJECTFIGURE 2 - BENEFITTED PROPERTIES

SAVANNA OAKS AREA F

APPENDIX B: PRELIMINARY OPINION OF

PROBABLE COSTS

ITEM

NO. ITEM UNIT QTY. UNIT PRICE COST

1 ADJUST MANHOLE CASTING, INCLUDING NEW HDPE ADJUSTING RINGS EA 115 $750.00 $86,250.00

2 ADJUST MANHOLE CASTING, INCLUDING NEW HDPE ADJUSTING RINGS (BOULEVARD) EA 5 $650.00 $3,250.00

3 INSTALL MANHOLE DROP SHELF EA 0 $500.00 $0.00

4 REMOVE STEEL ADJUSTING RING EA 55 $100.00 $5,500.00

5 INSTALL 12" (4' DIA) BARREL SECTION EA 2 $1,500.00 $3,000.00

6 PATCH GRAVEL STREET SY 50 $30.00 $1,500.00

7 PATCH STRUCTURE EA 1 $500.00 $500.00

8 CLEAN OUT INVERT EA 2 $500.00 $1,000.00

9 4' CIPP, 8" PVC EA 1 $1,600.00 $1,600.00

10 ADJUST VALVE BOX EA 45 $350.00 $15,750.00

11 ADJUST VALVE BOX (BOULEVARD) EA 15 $250.00 $3,750.00

12 REPLACE TOP SECTION OF VALVE BOX, INCLUDING COVER EA 40 $400.00 $16,000.00

13 RECONSTRUCT VALVE BOX LF 50 $225.00 $11,250.00


15 HYDRANT RECONDITIONING AND PAINTING EA 45 $250.00 $11,250.00

16 HYDRANT FLAG EA 45 $50.00 $2,250.00

17 EXTEND HYDRANT BARREL LF 1 $1,500.00 $1,500.00

18 INSTALL HYDRANT…need to verify with City if they want to do this. EA 4 $7,500.00 $30,000.00

19 EROSION CONTROL INSPECTOR LS 1 $5,000.00 $5,000.00

20 ADJUST MANHOLE CASTING, INCLUDING NEW HDPE ADJUSTING RINGS EA 21 $750.00 $15,750.00

21 ADJUST MANHOLE CASTING, INCLUDING NEW HDPE ADJUSTING RINGS (BOULEVARD) EA 5 $650.00 $3,250.00

22 ADJUST CATCH BASIN CASTING, INCLUDING NEW HDPE ADJUSTING RINGS EA 101 $350.00 $35,350.00

23 FURNISH MH COVER (R-1642) EA 2 $350.00 $700.00

24 FURNISH CASTING (R-3067-VB) EA 1 $500.00 $500.00

25 REMOVE AND REPLACE 8' OF 18" RCP LS 1 $2,000.00 $2,000.00

26 INLINE CIPP, 24" RCP LF 108 $80.00 $8,640.00

27 4' CIPP, 12" RCP EA 1 $2,200.00 $2,200.00

28 4' CIPP, 15" RCP EA 1 $2,500.00 $2,500.00

29 4' CIPP, 24" RCP EA 1 $8,000.00 $8,000.00

$94,950.00

PART 3 - STORM SEWER

+ 10% CONTINGENCY

CITY PROJECT NO. 16-2019-03

PART 1 - SANITARY SEWER

$102,600.00

PART 2 - WATER MAIN

$141,100.00

+ 25% INDIRECT COSTS

ESTIMATED CONSTRUCTION COSTS

WATER MAIN - ESTIMATED PROJECT COSTS $130,500.00

SANITARY SEWER - ESTIMATED PROJECT COSTS

ESTIMATED CONSTRUCTION COSTS $104,400.00

$26,100.00

PRELIMINARY OPINION OF PROBABLE COST2020 ROADWAY REHABILITATION PROJECT - SAVANNA OAKS AREA

$10,300.00

$112,900.00

SUBTOTAL

+ 10% CONTINGENCY $9,450.00


SUBTOTAL

$28,200.00

ITEM


30 REMOVE PROTRUDING TAP EA 1 $1,500.00 $1,500.00

31 PATCH STRUCTURE EA 10 $350.00 $3,500.00

32 REMOVE DEBRIS (REBAR) LS 1 $1,500.00 $1,500.00

33 INSTALL STEP EA 1 $350.00 $350.00

34 INSTALL 12" HIGH (4' DIA) BARREL SECTION EA 3 $1,500.00 $4,500.00

35 INSTALL 18" HIGH (4' DIA) BARREL SECTION EA 1 $1,800.00 $1,800.00

36 INSTALL 12" HIGH (2'X3') RISER SECTION EA 2 $1,000.00 $2,000.00

37 INSTALL 18" HIGH (2'X3') RISER SECTION EA 1 $1,300.00 $1,300.00

38 PATCH BITUMINOUS STREET SY 175 $75.00 $13,125.00

39 REMOVE CATCH BASIN OR MANHOLE EA 7 $700.00 $4,900.00

40 5' DIA STORM SEWER MH, 8' DEEP, INCL 4' SUMP & R-1642 CSTG (DETAIL PLATE STO-4) EA 2 $9,000.00 $18,000.00

41 6' DIA STORM SEWER MH, 8' DEEP, INCL 4' SUMP & R-1642 CSTG (DETAIL PLATE STO-4) EA 5 $10,500.00 $52,500.00

42 CONNECT EXISTING PIPE TO NEW STRUCTURE EA 14 $1,000.00 $14,000.00


44 PATCH BITUMINOUS STREET SY 105 $75.00 $7,875.00

45 REMOVE AND REPLACE CONCRETE CURB AND GUTTER LF 60 $50.00 $3,000.00

46 TOPSOIL/COMPOST MIXTURE CY 16 $50.00 $800.00

47 SEEDING, MNDOT MIX 25-151 LB 3 $5.00 $15.00

48 HYDRAULIC MATRIX, TYPE MULCH SY 75 $5.00 $375.00

49 MOBILIZATION LS 1 $100,000.00 $100,000.00

50 TRAFFIC CONTROL LS 1 $20,000.00 $20,000.00

51 TEMPORARY MAILBOX EA 75 $50.00 $3,750.00

52 SALVAGE AND REINSTALL MAILBOX CLUSTER EA 25 $125.00 $3,125.00

53 SALVAGE AND REINSTALL SIGN EA 9 $300.00 $2,700.00

54 CLEAR AND GRUB TREE EA 4 $750.00 $3,000.00

55 SAWING BITUMINOUS PAVEMENT LF 575 $3.00 $1,725.00

56 SAWING BITUMINOUS TRAIL LF 80 $3.00 $240.00

57 SAWING BITUMINOUS DRIVEWAY PAVEMENT LF 2,150 $3.00 $6,450.00

58 SAWING CONCRETE DRIVEWAY PAVEMENT LF 925 $5.00 $4,625.00

59 CRACK REPAIR, 1.5' WIDE MILL AND BITUMINOUS PATCH LF 1,030 $15.00 $15,450.00

60 MILL BITUMINOUS PAVEMENT, FULL WIDTH (1.5" THICK) SY 18,000 $1.75 $31,500.00

61 REMOVE BITUMINOUS STREET PAVEMENT SY 41,300 $3.00 $123,900.00

62 REMOVE BITUMINOUS TRAIL PAVEMENT SY 1,700 $4.00 $6,800.00

63 REMOVE BITUMINOUS DRIVEWAY PAVEMENT SY 1,070 $7.50 $8,025.00

64 REMOVE CONCRETE DRIVEWAY PAVEMENT SY 600 $10.00 $6,000.00

65 REMOVE CONCRETE PEDESTRIAN RAMP SF 1,300 $2.00 $2,600.00

$31,200.00

ESTIMATED CONSTRUCTION COSTS $124,800.00


+ 10% CONTINGENCY $11,335.00

STORM SEWER - ESTIMATED PROJECT COSTS $156,000.00

SUBTOTAL $113,465.00

STORM WATER QUALITY - ESTIMATED PROJECT COSTS

PART 4 - STORM WATER QUALITY

$116,200.00


$145,300.00

$29,100.00

SUBTOTAL $105,665.00

+ 10% CONTINGENCY $10,535.00

PART 5 - STREETS

ESTIMATED CONSTRUCTION COSTS

ITEM


66 REMOVE SIGN EA 6 $100.00 $600.00

67 REMOVE EXISTING GRAVEL BASE CY 1,150 $17.50 $20,125.00

68 REMOVE AND REPLACE CONCRETE CURB & GUTTER, HIGH EARLY - HAND PLACED LF 5,900 $28.00 $165,200.00

69 REMOVE AND REPLACE CONCRETE CURB & GUTTER, HIGH EARLY - MACHINE LAID LF 7,200 $20.00 $144,000.00

70 COMMON EXCAVATION - TRAIL CY 450 $35.00 $15,750.00

71 SUBGRADE EXCAVATION - TRAIL CY 300 $35.00 $10,500.00

72 AGGREGATE BACKFILL - TRAIL TN 700 $16.00 $11,200.00

73 AGGREGATE BASE, CLASS 5 TN 2,300 $14.00 $32,200.00

74 AGGREGATE BASE, CLASS 5 - TRAIL TN 700 $18.00 $12,600.00

75 FINISH GRADING - STREET SY 41,500 $1.50 $62,250.00

76 FINISH GRADING - TRAIL SY 3,220 $2.00 $6,440.00

77 BITUMINOUS MATERIAL FOR TACK COAT GL 4,200 $2.00 $8,400.00

78 TYPE SP 12.5 WEARING COURSE MIXTURE (3,C) TN 7,300 $71.00 $518,300.00

79 TYPE SP 9.5 WEARING COURSE MIXTURE (3,C) TN 4,400 $76.00 $334,400.00

80 TYPE SP 9.5 WEARING COURSE MIXTURE (3,B) TN 1,850 $68.00 $125,800.00

81 TYPE SP 9.5 WEARING COURSE MIXTURE (2,C) - TRAIL TN 580 $80.00 $46,400.00

82 PATCH BITUMINOUS DRIVEWAY SY 500 $35.00 $17,500.00

83 PATCH BITUMINOUS TRAIL SY 75 $35.00 $2,625.00

84 CONCRETE PEDESTRIAN CURB RAMP SF 2,310 $10.00 $23,100.00

85 TRUNCATED DOME PANEL SF 390 $52.00 $20,280.00

86 6" THICK CONCRETE DRIVEWAY APRON (RESIDENTIAL), HIGH EARLY SY 1,200 $62.00 $74,400.00

87 7" THICK CONCRETE DRIVEWAY APRON (COMMERCIAL), HIGH EARLY SY 230 $72.00 $16,560.00

88 MODULAR BLOCK RETAINING WALL SF 400 $45.00 $18,000.00

89 STORM DRAIN INLET PROTECTION PER STANDARD DETAIL ERO-4C EA 100 $150.00 $15,000.00

90 STREET SWEEPER WITH OPERATOR HR 120 $150.00 $18,000.00

91 SKIDSTEER (BOBCAT) WITH OPERATOR HR 120 $125.00 $15,000.00

92 TOPSOIL/COMPOST MIXTURE CY 1,450 $40.00 $58,000.00

93 SEEDING, MNDOT MIX 25-151 LB 300 $5.00 $1,500.00

94 HYDRAULIC MATRIX, TYPE MULCH SY 6,600 $1.50 $9,900.00

95 WEED CONTROL SY 6,600 $0.50 $3,300.00

96 APPLICATION OF WATER FOR TURF ESTABLISHMENT HR 175 $100.00 $17,500.00

97 WATER FOR DUST CONTROL MG 100 $50.00 $5,000.00

98 12" SOLID LINE, WHITE THERMOPLASTIC (BY OWNER) LF 260 $12.00 $3,120.00

$597,500.00

SUBTOTAL $2,172,840.00

STREETS - ESTIMATED PROJECT COSTS $2,987,600.00

+ 10% CONTINGENCY $217,260.00

ESTIMATED CONSTRUCTION COSTS $2,390,100.00


Documents

Feasibility Report for 2020 Roadway Rehabilitation Project ... Report - 2020 Rehab - Savanna … · 2020 Roadway Rehabilitation Project – Savanna Oaks Area ǀ BMI Project No. N12.118928