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Sibley Pond Bridge Design-Build Replacement

Accelerated project delivery, state-of-the-art concepts, utilization of accelerated bridge construction (ABC) techniques, and making every day in the allotted project schedule count, played an important role in the design and construction of the 790-foot-long, two-lane Sibley Pond Bridge. WSP USA served as lead designer on the design-build team, providing bridge, civil, and geotechnical design services.


Sibley Pond Bridge
The existing 30-span bridge along Route 2 over Sibley Pond was built in 1939. After more than 70 years of service, the Maine Department of Transportation decided to replace the significantly deteriorated bridge using an expedited design-build procurement process. Due to an innovative design and the very first use of the Precast/Prestressed Concrete Institute (PCI) Northeast Extreme Tee (NEXT D) double T-beam, the Sibley Pond Bridge was opened to traffic in 15 months. 

The NEXT D section was newly developed by PCI Northeast in response to the Federal Highway Administration’s nationwide initiative for ABC. Potential advantages included opportunities for additional economy, speed of erection, and enhanced durability to meet the owner’s 100-year life requirement. The new bridge consists of ten 79-foot spans arranged in two five-span continuous units. 

A powerful tropical storm causing shipment delays did not prevent the bridge from opening more than 10 months ahead of the original scheduled completion date.