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I. Existing Conditions
II. Who Is Impacted
III. The Challenge – Satisfy Everyone!
IV. Construction
V. Summary
VI. Questions
– Built in 1934, Posted for 17 tons
– Jack arch structure with concrete and steel deterioration
– Insufficient bridge width for use• Vehicles, pedestrians, snowmobiles
• Existing rail-to-rail – 26’; Proposed Width – 34’
– Abutment footing undermining
– Asbestos paint on girders and railings
– Poor drainage
– No record plans for bridge
– Subsurface Conditions – Sand
– Locate septic systems
– New Deck at Restaurant - installed prior to construction
Project Influences
Project
Community
• Businesses• Residences• Schedule• Pedestrians• Recreational
vehicles
Agencies
• Funding• Permitting• Utilities
• Funding– FHWA, NYSDOT and County
• Utility Companies– National Grid, Frontier, Time Warner Cable, Turkey
Water Works (Local Water) – all relocated
• Permitting– NYSDOT, APA, NYSDEC and USACE
• Adjacent Private Residences– Driveways, septic systems
• Adjacent Business owners– Need to stay open during tourist season
• Waterway Under Bridge
• Pedestrians, Snowmobile Trail
PRIVATE
HOTEL
MARINA
CHURCH
SOUTH SHORE ROAD
SEPTIC
WELL
Schedule– Tourist season - July and August
• Town - no construction
– No Detour Route• Staged Construction
– Shortened construction• Mid April to Mid September
Schedule– Minimize Concrete Pours
• Cure time impact
– Snowmobile Trail• Open December 1 to March 31
• Goal– Bridge open by July 4th
• (Schedule April 1 to July 1)
– 13 weeks???
• Alternatives Considered– Superstructure Replacement
• Existing abutment widened
• 75 year old concrete
• No record plans
• Cost 95% of replacement
– Replacement Structure Built Under Existing• Town – no reduction to clearance of navigable
waterway
• Alternatives Considered– Replacement w/ C.I.P. Concrete Abutments with
Spread Footings• Footings below stream bed for scour prevention
• Cofferdams needed
– Replacement w/ Integral Abutments• Steel H-Piles
• Prestressed concrete beams
• Asphalt Wearing Surface
• Replacement with Integral Abutments
– Precast saves time
– Limited demolition/excavation
• How can we build within constraints of schedule?
• Contractor and Town
– Insufficient space for crane staging
– Traffic Control• Too close to Route 28
– Too much time needed for staged construction
Now what?
• Eureka!!!– Town Highway Superindendent
• Existing snowmobile trail for detour route
• Town owns majority of R.O.W.
Time to pull out the ACE up my
sleeve!
Piece of
Cake!
• Build Detour in Fall before December 1
• Relocate overhead utilities prior to April 1
• Open Detour - April 1
• Close Bridge - April 1
• Open New Bridge - July 1
• Project Completion - July 31
Design Speed - 20 MPH
2 – 10 ft travel lanes
Detour Profile
• Horizontal & Vertical close to existing
• Helps keep vehicle speed down!
• Project completed on June 30
• Project also included:– Separate C.I.P. u-wings with spread footings
– 60 ft long, 8 ft high tapered C.I.P retaining wall with spread footing
– Closed drainage
– Thermoplastic Snowmobile Crossing
• Permits– APA – wetlands along detour
– NYSDEC – stream restrictions for salmon spawning
– USACE – waterway
– NYSDOT Highway Work Permit – new drainage structure on Route 28 and construction signs
• Financials– Engineers Estimate: $1.4 M
– Low Bid: $1.2 M
– Final Construction Cost: $1.1 M
Thorough Planning– Construction Schedule discussed with contractor
before design
– Utility Agreements – relocated prior to April 1
– Bid late summer allowing contractor time to plan for spring construction
– Liquidated damages provisions• Detour completion December 1
• Bridge open July 1
Team Effort– County – overall project management
– NYSDOT – R.O.W. acquisition
– Town – agreement with Marina and local public relations
Public Involvement– Design - 2 public meetings
– Construction – Town Hall meetings
• You can never have too much communication with your team
• Don’t be afraid to talk to local people
• Think outside the box
• Construction schedule is VERY important!
1. What is the name of the unique environmental agency involved with this project?
– APA
2. Who contributed to the “solution” for the project detour?
– Town Highway Superintendent & Dick Payne
3. What was the design speed used for the detour road?
– 20 MPH
4. Besides vehicles and pedestrians, what else used the bridge for a crossing?
– Snowmobiles
5. How many weeks did the bridge construction take?
– 13 weeks
6. What material was the temporary pedestrian bridge made out of?
– Aluminum
7. What was the existing span of the bridge?– 49 feet
8. How long were the new steel h-piles?– 100 feet
9. What type of abutment was used for the new bridge?
– Integral
10. How many liquidated damage provisions were used?
– 2 (1 – detour completion , 1 – bridge opening)