2016 UNDERWATER

BRIDGE INSPECTION REPORT

BRIDGE #

DISTRICT: COUNTY: CITY/TOWNSHIP:

Date of Inspection:

Equipment Used:

Inspected By:

Report Written By:

Report Reviewed By:

Final Report Date:

57518

CSAH 3 over RED LAKE RIVER

District 2 Pennington DEER PARK

09/27/2016

Schroeder, Brian

Brian Schroeder

County Highway AgencyOwner:

MinnesotaSTATE:

UNDERWATER SUMMARY 3

UNDERWATER INSPECTION 4

UNDERWATER INSPECTION PROCEDURES 6

STRUCTURE INVENTORY 7

ELEMENTS 8

PICTURES 11

DRAWINGS 17

TABLE OF CONTENTS

PAGE NUMBER

Contractor:

Reinspect the submerged substructure units at the normal maximum recommended (NBIS) interval of sixty (60) months.

Ayres Associates & Collins Engineers, Inc.

9687Contractor Job Number:

RECOMMENDATIONS

REPORT SUMMARY

UNDERWATER INSPECTION

The substructure units inspected at Bridge No. 57518, Piers 1 and 2, were found to be in good condition with no defects of structural significance observed. The channel bottom consisted of sand which was well established and appeared stable with no evidence of scour.

(A) The 16 inch diameter pile encasements of Piers 1 and 2 were coated from top of pile to the channel bottom. The piles typically have no loss of coating from top of piles down 5 feet. From 5 feet below the top of the pile to the channel bottom, the piles have loss of coating over up to 50% of total surface area. In the areas of coating loss, the piles have random areas of minor surface corrosion with no appreciable section loss.(B) Pier 1, Pile B (second pile from the south) has hollow sounds at west face, 3 feet high, starting 6 feet below cap.(C) Pier 1, Pile E (second pile from the north) has hollow sounds at west face, 4 feet high, starting 5 feet below cap.(D) Pier 1, Pile F (northern most pile) has hollow sounds at west face, from 6 feet below cap to ground line.(E) Light to moderate accumulations of timber debris and organic material were observed around Piles C through F of Pier 1.

INSPECTION FINDINGS

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The top of the pile cap on the south side of Pier 1Water Level Reference:

WATERLINE DATUM

Waterline Elevation (feet):

The waterline was approximately 12.2 feet below reference.Description:

87.8

4.

Piers 1 and 2Substructure(s) Inspected:

SUBSTRUCTURE INSPECTION DATA

General Shape:

6.2Maximum Water Depth at Substructure(s) Inspected (feet):

The piers each consist of a single row of six concrete filled steel pipe piles. The piles at each end are battered in the direction parallel to the pier. The piles support a rectangular reinforced concrete pile cap with rounded ends.

Code:Item 62: Culvert:

7

Y 48 09/2016Code:Item 92B: Underwater Inspection:

Code:

(Minnesota specific codes are used for 92B and 113)

NBIS CODING INFORMATION5.

Item 60: Substructure:

Item 61: Channel and Channel Protection:

7Code:

District 2District:

CSAH 3

County:

The superstructure consists of three spans of multiple precast concrete beams supporting a reinforced concrete deck. The superstructure is supported by two reinforced concrete abutments and two concrete filled steel pipe pile piers. The piers are numbered 1 and 2 starting from the west end of the bridge. No design drawings were available.

Bridge Description:

057 - Pennington

Facility Carried:

BRIDGE DATA1.

UNDERWATER INSPECTION

Bridge #:

RED LAKE RIVERFeature Intersected:

57518

Underwater Visibility (feet):

Cloudy, 46°FWeather Conditions:

4.0

3.

1.0Waterway Velocity (ft/sec):

09/27/2016

Professional Engineer/Team Leader:

INSPECTION DATA2.

Brian K. Schroeder, P.E.

Date of Underwater Inspection:

Brian K. Schroeder, P.E.Inspection Diver:

Page 4 of 18

885 Scour 1 EA 1

STRUCTURAL ELEMENT CONDITION RATING

Conditions

6.

I

Bridge is scour critical because abutment or pier foundation is rated as unstable due to observed scour at bridge site.

Item 113: Scour Critical Bridge: Code:

No (Mark your selection with an X)Yes X

225

CS3 CS4

Steel Piles 9 312 EA

CS2ELEM # Unit CS1Element Description Quantity

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The routine underwater inspection of Bridge 57518 (CSAH No. 3 over the Red Lake River) was completed on September 27, 2016. The underwater inspection was conducted from shore. The inspection was conducted by a team consisting of a PE-Diver with a valid MnDOT Team leader certification, a backup diver and a dive tender. The inspection utilized commercial dive equipment and techniques (SSA and/or SCUBA) in accordance with OSHA regulations. Profiles were taken along the upstream and downstream faces of the bridge and around the periphery of substructure units to determine the presence, location and area of scour.

The bridge elements inspected consisted of two piers each consisting of a single row of six concrete filled steel pipe piles. According to the bridge inventory or design drawings, the piles support a rectangular reinforced concrete pile cap with rounded ends. Inspection procedures followed FHWA guidance and the MnDOT Bridge and Structure Inspection Program Manual with channel bottom probing to search for foundations. The routine underwater inspection frequency is recommended to remain at 60 months based on those findings and risk factors. Also, inspection procedures should continue to follow the above approach and standard guidance with 100% Level I and 10% Level II intensity efforts.

INSPECTION PROCEDURES

UNDERWATER INSPECTION

Page 6 of 18

Spec. Feat.Pier Foundation (Material/Type)

3 - STEELCantilever ID

+ W A T E R W A Y +Number of Spans Historic Status

4 - PILE BENT

Underwater 60Culvert Type 3 - FTG PILE

Pinned Asbly.

09/27/2016

Barrel Length

139.1 ft. Navigation Control

Waterway Opening (sf.) 1105Structure Length

ft. Year Painted

0 - No nav. control on waterwayDeck Width (Out-to-Out) 44.0

+ P A I N T +

APPR: 0 TOTAL:5 - Not eligible

MAIN: 3

Main Span Length 46.3 ft.Drainage Area (sq. mi.) 2289.0

B R I D G E D A T A +Main Span Detail

N - NOT REQUIRED+ M I S C.

Appr. Span Type Structure Flared

GR Termini N - NOT REQUIRED

Appr. Guardrail

Main Span Type 5 - Prestress or Precast Median Width On Bridge

ft. Bridge Railing 1 - MEETS STANDARDS

N - NOT REQUIRED

Main Span Design 20 - Double Tee

ft. GR Transition

Skew 20 LEFT

Y/N Freq Date

Abutment Foundation (Material/Type)

1 - CONC Frac. Critical

D E P T H I N S P. +Appr. Span Design

0 - No flare+ I N

Appr. Span Detail Field Conn. ID

Parallel Structure N - No parallel structure

Pier Protection

0 - Not Required

Rating Date 10/17/20135651 sq. ft. Traffic

ft. 50B. Rt 0.00Sidewalk Width 50A. Lt 0.00

Roadway Area (Curb-to-Curb)

Posted Load 0 - Not Required

PostingStructure Area (Out-to-Out) 6120 sq. ft.

DBL:VEH: SEMI:

Rt 22 ARail Type Lt 22 C N - N/AN - N/A B N - N/A

N - Not Applicable Overweight Permit CodesCurb Height Lt

ft. Horizontal 0 - Not Required

0.00 ft. Vertical0.00 ft. Rt

Wear Surf Install Year

sq. ft. Nav. Vert. Lift Bridge Clear. (ft.)

I - LOW RISK YearPrimer Type MN Scour Code

Painted Area

Unsound Paint % Nav. Clr. (ft.)Deck Material 1 - Concrete Cast-in-Place 0.0Wear Surf Type 6 - Bituminous

Vert. 0.0 Horiz.

S I G N S +Operating Rating 2 - HS TRUCK

0 - None + B R I D G E

Inventory Rating 2 - HS TRUCK 20.8

34.8Deck Rebars Install Year

Deck Rebars

Finish TypeWear Course/Fill Depth 0.33 ft.

0 - None

Design Load 9 - HS 25 (OR GREATER)

+ C A P A C I T Y R A T I N G S +Deck Membrane

48 ° 1

Inspector Name Schroeder, Brian

Latitude Control Section (TH Only) Status' 12.98 ''

2 - 2-way traffic

Routine Inspection Frequency 24

Sect., Twp., Range

0.1 MI E OF JCT CSAH 25 Level of Service 1 - MAINLINE

- 40W Roadway Type3 - 152N

Detour Length 6.0 mi.R A T I N G S +

Custodian 02 - County Highway Agency

Owner 02 - County Highway AgencyDeck 8 Unsound

Deck %

C O N D I T I O N° 46 '

A - Open

Longitude 95 033+00.200 + N B I 28.82 '' Reference Point

Crew

+ I N S P E C T I O N +

Agency Br. No. 97

District 02

Bridge Match ID (TIS) 0 Userkey

CSAH 3 over RED LAKE RIVER

Minnesota Structure Inventory Report

Bridge ID: 57518

+ G E N E R A L + + R O A D W A Y +

Date: 01/30/2017

Sufficiency Rating 99.8Roadway Name or Description

3

City

Routine Inspection Date 10/18/2016

Desc. Loc.

Township 57004 - DEER PARK CSAH 3

Number

NRoadway O/U Key Route On StructureMaint. Area Structurally Deficient

NRoute Sys 04 - CSAHCounty 057 - Pennington Functionally Obsolete

Lanes

Waterway Adequacy 8Max. Vert. Clear.

ft.Legislative District 02Bft.Potential ABC 2 - N/A ft.

ft.On - Off System Roadway Width 40.60 ft.

Vertical Clearance ft.1 - ON

Underclearances N

Service On 1 - Highway Appr. Surface Width+ S A F E T Y F E A T U R E S +

5 - Waterway Bridge Roadway Width 40.6

36.0 ft.

Service Under

ft.

ft. Approach Alignment 8Horizontal Clear.

ft.

ft.+ S T R U C T U R E + Lateral Clearance

HCADT ADTT7

Year Built 1996

MN Year Reconstructed Functional Class

%Channel 7

Substructure

0Superstructure 8

ON 2 UNDER

420 YEAR 2008BMU Agreement ADT

Structure Evaluation 7If Divided

D I M E N S I O N S +Bridge Plan Location 3 - COUNTY

Deck Geometry 9NB-EB SB-WBDate Opened to Traffic

+ R D W Y

FHWA Year Reconstructed

MN Temporary Status

07 - Rural - Major CollectorCulvert N

A P P R A I S A L R A T I N G S ++ N B I

Page 7 of 18

County:

City:

Township:

Township:Section: Range:

Span Type:

NBI Deck: Super: Sub: Chan: Culv:

Appraisal Ratings - Approach: Waterway:

Required Bridge Signs - Load Posting:

Horizntal:

Traffic:

Vertical:

MN Scour Code:

Open, Posted, Closed:

Location:

Route:

Control Section:

Local Agency Bridge Nbr.:

Ref. Pt.:

Maint. Area:

Length:

Deck Width:

Rdwy. Area/ Pct. Unsnd:

Paint Area/ Pct. Unsnd:

Culvert:

Pennington

57004 - DEER PARK

152N3 40W

5 - Prestressed Concrete 2 -Stringer/Multi-beam or Girder

8 8 7 7 N

8 8

0 - Not Required

0 - Not Required

0 - Not Required

N - Not Applicable

I - LOW RISK

0.1 MI E OF JCT CSAH 25

04 - CSAH 3 033+00.200

139.1

44.0

5651 sq. ft. / %

sq. ft. / %

N/A

A - Open

ft.

ft.

Postings:List:

MINNESOTA BRIDGE INSPECTION REPORT

02/06/2017

BRIDGE 57518 CSAH 3 OVER RED LAKE RIVER

Unofficial Structurally Deficient N

NUnofficial Functionally Obsolete

Unofficial Sufficiency Rating 99.8

ELEMNBR ELEMENT NAME INSP. DATE QUANTITY

QTYCS 1

QTYCS 2

QTYCS 3

QTYCS 4REPORT TYPE

Prestressed Concrete Top Flange 09/27/2016 6120 SF 6110 10 0 015 Underwater

10/18/2016 6120 SF 6110 10 0 0Routine

Notes: [2016] Migrator assumed CS1.

Underside of Concrete Deck Notes: Under deck: at span #1 by the abutment between beam#1 and #2 minor crack with light leaching withefflorescence. The same at span #3 by the abutment. No rust stains at this time. (2014)Span #1 joint between beam #1 and #2, and #4, #5 show leaching with efflorescence, and showing rust. The same at span #3, but no rust.(2016)

510 - Wearing Surfaces 5651 SF 4651 1000 0 0

Notes: Bituminous Overlay Notes: THE DECK WAS MILLED AND OVERLAY BIT. 2009, IN GOOD SHAPE. (2010) Minor cracking (2014)Minor cracking been sealed. (2016)

Underwater 09/27/2016

5651 SF 4651 1000 0 0Routine 10/18/2016

Prestressed Concrete OpenGirder/Beam

09/27/2016 1669 LF 1669 0 0 0109 Underwater

10/18/2016 1669 LF 1669 0 0 0Routine

Notes: [2016] Migrator estimated the quantity of the double tees. Verify the quantity by multiplying the number of vertical beams by the decklength.NO CHG. (2010)(2014) No chg. (2016)

Reinforced Concrete Abutment 09/27/2016 138 LF 137 1 0 0215 Underwater

10/18/2016 138 LF 137 1 0 0Routine

Notes: [2016] Migrator added 40 LF to abutment quantity to account for wing walls (CS1:40 CS2:0 CS3:0 CS4:0).SOME CONCRETE CHIPPING ALONG BRIDGE SEATS AT EAST ABUTMENT CONCRETE CHIPPING ISTHE SAME AS LAST INSPECTION. NO CHG. (2010) No CHG (2012)Minor vertical cracking at both abutments. (2012) West abutment about center crack has some leaching of efflorescence down at the slope.(2014)After NBIS Review: The west abutment show settlement of the slope. The county repaired it by hauling riprap and fill. Filling under theabutment. Fall of 2015

Wing wall notes: NE WING WALL - SPALLING AND DELAMINATION MINOR. (2010)NW WING WALL - APPEAR TO BE IN GENERALLY GOOD CONDITION (2010)SE WING WALL - APPEAR TO BE IN GENERALLY GOOD CONDITION (2010)SW WING WALL - APPEAR TO BE IN GENERALLY GOOD CONDITION (2010)No Change (2012) No Chg. (2014)East South wing wall show minor cracking. (2016)

The East abutment North end show moderate settlement of the

Page 8 of 18

Steel Pile 09/27/2016 12 EA 9 3 0 0225 Underwater

10/18/2016 12 EA 12 0 0 0Routine

Notes: PIER 2 - PILING 4 & 5, 5'" DOWN FROM CAP NEEDS PAINT. (2010) Fair condition (2016)[2016 UW]Pier 1, Pile B (second pile from the south) has hollow sounds at west face, 3 feet high, starting 6 feet below cap.Pier 1, Pile E (second pile from the north) has hollow sounds at west face, 4 feet high, starting 5 feet below cap.Pier 1, Pile F (northern most pile) has hollow sounds at west face, from 6 feet below cap to ground line.

515 - Steel Protective Coating 1277 SF 958 319 0 0

Notes: [2016] Migrator assumed quantity of 999 SF and estimated the condition states. Overall, the 16 inch diameter pile encasements of Piers1 and 2 were coated from top of pile to the channel bottom. The piles typically had no loss of coating from top of piles down 5 feet. From 5 feetbelow the top channel bottom, the piles had loss of coating over up to 25% of total surface area. In the areas of coating loss, the piles hadrandom areas of minor surface corrosion with no appreciable section loss.

Underwater 09/27/2016

1277 SF 958 319 0 0Routine 10/18/2016

Reinforced Concrete Pier Cap 09/27/2016 98 LF 98 0 0 0234 Underwater

10/18/2016 98 LF 98 0 0 0Routine

Notes: GOOD SHAPE (2010)(2014) No chg. (2016)

Reinforced Concrete Bridge Railing 09/27/2016 262 LF 262 0 0 0331 Underwater

10/18/2016 262 LF 262 0 0 0Routine

Notes: NO CHG. (2010) Shows minor cracking. (2014) No chg. (2016)

Critical Deficiencies or Safety Hazards 09/27/2016 1 EA 1 0 0 0800 Underwater

10/18/2016 1 EA 1 0 0 0Routine

Notes: NO CHG. (2010) (2014)

Bituminous Approach Roadway 09/27/2016 2 EA 0 2 0 0822 Underwater

10/18/2016 2 EA 0 2 0 0Routine

Notes: APPROACHES GOOD (2010) No Chg. (2014)Minor settling a both approaches. (2016)

Secondary Members (Superstructure) 09/27/2016 19 EA 19 0 0 0855 Underwater

10/18/2016 19 EA 19 0 0 0Routine

Notes: Good Condition (2016)

Scour 09/27/2016 1 EA 1 0 0 0885 Underwater

Other Bridge Signing 09/27/2016 1 EA 1 0 0 0891 Underwater

10/18/2016 1 EA 1 0 0 0Routine

Notes: END MARKERS IN GOOD CONDITION. (2010) (2014) No chg. (2016)

Slopes & Slope Protection 09/27/2016 1 EA 0 1 0 0892 Underwater

10/18/2016 1 EA 0 1 0 0Routine

Notes: MINOR TO MOD. SETTLING EAST SIDE. (2010)MOD. SETTLING WEST SIDE. (2010)No Change (2012) (2014)The East abutment North end show moderate settlement of the slope. In same area can see the bottom of the abutment but not under it.The West slope in good condition been fixed. (2016)

ELEMNBR ELEMENT NAME INSP. DATE QUANTITY

QTYCS 1

QTYCS 2

QTYCS 3

QTYCS 4

BRIDGE 57518 CSAH 3 OVER RED LAKE RIVER

REPORT TYPE

Page 9 of 18

Deck & Approach Drainage 09/27/2016 1 EA 0 1 0 0894 Underwater

10/18/2016 1 EA 0 1 0 0Routine

Notes: NE WING WALL LITTLE OR MOD. SETTLING. AROUND END MOD. (2010) No CHG (2012) (2014)SE WING WALL LITTLE OR NO SETTLING. (2010) No CHG (2012) (2014)SW WING WALL MOD. SETTLING AROUND END. (2010) No CHG (2012) (2014)NW WING WALL LITTLE OR NO SETTLING, END MOD. TO BAD HOLE. (2010) No CHG (2012)Deck needs cleaning gutter and drains. (2016)

Protected Species 09/27/2016 1 EA 0 1 0 0900 Underwater

10/18/2016 1 EA 0 1 0 0Routine

Notes: Use this element to track the presence of protected species living on this structure.Swallow nests are present on the structure. (2016)

General Notes:

Inspector's Signature Reviewer's Signature

10-29-04 NO CHANGES SINCE PREVIOUS INSPECTION. JJ 11-20-06 NO STRUCTURAL CHANGES SINCE LASTINSPECTION. JJ SEE ELEMENTS (2012) Added Underwater Bridge Inspection report, Aug 27,2012See Elements (2014)(2016) Elements 310, 313. from 2015 NBIS Compliance report for Pennington County (There are no visible bearings on thisbridge. Should delete elements 310 &313) JCM

58. Deck NBI:

36A. Brdg Railings NBI:

36B. Transitions NBI:

36C. Appr Guardrail NBI:

36D. Appr GuardrailTerminal NBI:

59. Superstructure NBI:

60. Substructure NBI:

61. Channel NBI:

62. Culvert NBI:

71. Waterway Adeq NBI:

72. Appr RoadwayAlignment NBI:

ELEMNBR ELEMENT NAME INSP. DATE QUANTITY

QTYCS 1

QTYCS 2

QTYCS 3

QTYCS 4

BRIDGE 57518 CSAH 3 OVER RED LAKE RIVER

REPORT TYPE

Page 10 of 18

Photo 1 - Upstream Profile

Photo 2 - Downstream Profile

Pictures

Page 11 of 18

Pictures

Photo 3 - West Abutment

Photo 4 - East Abutment

Page 12 of 18

Pictures

Photo 5 - Pier 1 West Face

Photo 6 - Pier 1 East Face

Page 13 of 18

Pictures

Photo 7 - Pier 2 West Face

Photo 8 - Pier 2 East Face

Page 14 of 18

Pictures

Photo 9 - Typical Condition at Waterline

Photo 10 - Upstream Channel

Page 15 of 18

Pictures

Photo 11 - Downstream Channel

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