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| Woodrow Wilson Bridge - General Engineering Contract
Woodrow Wilson Bridge - General Engineering Contract
The Woodrow Wilson Bridge Project is a 7 1/2 mile long project that includes the bridge itself and 4 connecting interchanges. Construction on the Project began in 2000 with the initial dredging of the river channel. Construction of the foundations was completed in July, 2003 and work continues on the bridge superstructure, the MD I-295 Interchange and the VA Route 1 Interchange. The VA 6/7 contract, which is the largest contract the Virginia Department of Transportation has ever advertised was recently awarded and construction should start in early 2004. The overall budget for this contract is $2.56B and completion is expected in 2011.
AMT is involved in a variety of different aspects of this Project. These responsibilities include surveying, stormwater management, Virginia construction inspection, project-wide office management and administration support.
SURVEYING: AMT provided bridge pile, pier cap, abutment as-built surveys for the WWB and all US Route 1 Interchange bridges; as-built surveys for various road and utility construction; post-construction surface elevation monitoring; Potomac River hydrographic survey; utility and storm drainage stakeout; right-of-way stakeout; stream restoration topographic survey; various topographic site surveys; right-of-way stakeout surveys; and stream mitigation surveys.
STORMWATER MANAGEMENT: AMT was involved in the early design, stages of as part of the Wilson Bridge project for producing Conceptual Stormwater Management Reports for both the Maryland and Virginia sides of the project. This was a unique challenge since concepts had to adapt to both the Maryland and Virginia Design Guidelines and Regulations. In addition, part of the project also was within the District of Columbia.
This was a challenging effort due to the constant coordination between the PCC representatives, States and Regulatory Agencies, and Design Consultants.
The Maryland improvements included modifications to I-95/495, and the I-295 and Indian Head Highway (MD Route 210) interchanges, a large portion of the proposed 12-lane Wilson Bridge, and roadways improvements into the National Harbor site located in Prince George's County. The report included the hydrologic analyses at all existing and proposed outfall locations, existing outfall conditions, and the preliminary locations, sizing and types of five proposed SWM facilities. The report was reviewed by the PCC, SHA and approved by MDE for use in the final design.
The Virginia improvements included modifications to I-95, the Telegraph Road and U.S. 1 interchanges, and a smaller portion of the proposed 12-lane bridge located in Fairfax County. The report provided the same information as the Maryland report, for SWM facilities. These improvements also were coordinated with the Virginia Department of Conservation and Recreation. This report was reviewed by the PCC, VDOT, and was provided for use in the final design.
Constrictions such as right-of-ways, wetlands, and Critical Bay issues created great challenges for locations of SWM facilities to provide the required water quality and quantity control of runoff due to the new improvements.
CONSTRUCTION INSPECTION / ADMINISTRATION: AMT is currently involved in construction inspection and administration of many aspects of the WWB including the following:
- Bridge foundations that support the new Bridge's 17 piers (started in May 2001).
- The Virginia Approach Contract involving construction of the new twin bridges over land and ten new foundations being built at five pier locations to support six new bridge arches (started in April 2003).
- The Ground Improvement Contract between Telegraph Road and US Route 1 involving strengthening soil adjacent to the existing Capital Beltway where the wider Beltway will be built. Two soil stabilization methods are being used for this contract: 1) Temporarily adding levels of new soil to compress the existing ground and 2) Injecting cement and mixing it with existing ground (started December 2001).
- The first phase of US Route 1 Interchange "Tie-in" Contract (started in February 2003) involving replacing the existing Washington Street overpass with a longer overpass to span the wider Beltway. The new overpass will feature four lanes bordered by wide sidewalks, a bike/pedestrian path, and extensive landscaping. This phase also involves widening I-95N / Capital Beltway (Outer Loop) to match the new bridge and allow for interim shifting of existing Beltway traffic to new six-lane southern bridge (Outer Loop), while the new six-lane northern bridge (Inner Loop) is being constructed.
- The Southern Ramp Bridges of US Route 1 Interchange Contract involving building bridges over Cameron Run and Hunting Creek to align with the widened I-95N / Capital Beltway (Outer Loop) and building ramps to connect US Route 1 and I-95 / Capital Beltway.
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