The Virginia Passenger Rail Authority has awarded a $414 million design-build contract to a three way partnership of FlatironDragados and Herzog for the Franconia–Springfield rail bypass, a grade-separated mission designed to enhance reliability for each passenger and freight rail by one among Virginia’s busiest corridors.
In keeping with a FlatironDragados release June 22 asserting the win, the mission will realign 1.4 miles of passenger monitor and features a 0.6-mile flyover bridge that may initially carry a single monitor however is engineered to help a future second mainline.
The company’s February 2025 fact sheet notes the bypass design is about 90% full, with development anticipated to start this month and end by 2029.
Jim Schneiderman, FlatironDragados govt vice chairman, stated in a press release the mission “will present safer, extra environment friendly rail service by decreasing congestion and enhancing reliability.” He stated the group “will proceed to collaborate to … determine revolutionary options to challenges.”
Company technical paperwork present the flyover design makes use of concrete column piers supporting transverse metal flooring beams with cast-in-place composite decks over the CSX freight mainline. The method spans are designed with longitudinal metal plate girders and metal deck plating.
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This hybrid configuration was chosen over deeper longitudinal girder methods to scale back the construction’s vertical profile, preserve clearance over freight operations and simplify development sequencing in a reside rail hall, in response to the company’s January 2023 development trade request for info.
Plans present that the bypass alignment would require roughly 400,000 cu yd of earthwork, embankments, and retaining partitions to reduce impacts on close by neighborhoods. Momentary shoofly tracks can be put in to maintain freight and passenger trains working by the hall through the multi-year construct.
Dewatering methods, underground detention services and jack-and-bore culverts are deliberate to handle difficult subsurface situations, as described within the authority’s November 2024 roll maps.
Environmental assessments carried out beneath NEPA discovered no vital neighborhood impacts, the company reported; a noise research carried out decided post-construction sound ranges at close by houses will stay beneath 66 decibels, roughly equal to conversational noise. The company acknowledged it coordinated with the U.S. Military Corps of Engineers, U.S. Fish and Wildlife Service and Virginia Dept. of Environmental High quality to deal with wetland and wildlife issues.
A number of Funding Sources
The mission is funded by federal, state and native sources, together with a $100- million Federal Railroad Administration Consolidated Rail Infrastructure and Security Enhancements grant, Northern Virginia Transportation Authority contributions and Amtrak funds.
The bypass types a part of the rail company’s Remodeling Rail in Virginia initiative, which additionally contains the Franconia–Lorton third monitor and Lengthy Bridge North tasks.
Scott Norman, govt vice chairman of Herzog, stated the three way partnership “appears ahead to bringing this mission in on time and on price range.”
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