Much of the initial attention from infrastructure funding was focused on broadband and electric vehicle deployment. But now, other funding sources are getting lots of attention and bridge repair and replacement is occurring throughout the country. The bipartisan infrastructure bill provided $5 billion per year until 2026 just for bridges. That funding is encouraging state and local officials to reimagine how they deliver bridge projects. In 2021, it was reported that U.S. bridges had accrued a $125 billion backlog of critical maintenance needs. That was because 42 percent of them had been in service for more than 50 years. The same report found that it could possibly take 50 years to complete the backlog of critical bridge maintenance projects that would be required. That sobering news most likely encouraged elected officials to prioritize expediency related to repairing or replacing bridges in America. State transportation departments are now promoting design/build approaches to rehabilitating and replacing bridges because of delivery speed. This past summer, the state transportation departments for Ohio and Kentucky agreed to partner on the $2.8 billion design/build improvement of an interstate bridge between the two states. Earlier in 2022, the state of Missouri established a firm precedent for design/ build delivery of historic bridge projects. The Missouri Department of Transportation requested proposals for the design/build of its $243 million Chester Bridge project and a contract to a design/build team could be awarded as early as March 2023. A $75 million bridge project in Washington’s Clark County will call for a design/build team to replace the East Fork Lewis River bridge. Proposals will be requested in March of 2023. Despite being categorized as structurally deficient, the steel truss bridge services 38,000 vehicles—including nearly 7,000 large commercial freight vehicles—daily. The bridge was constructed in 1936 and mounting maintenance costs and disruptions to service have heightened the need to replace the structure. Historic bridge projects are being reimagined not only because of available funding but also because of incredible new technological developments. Accelerated Bridge Construction is changing how state transportation departments plan, design, and construct bridges without interrupting traffic. Remember those 56,000 U.S. bridges that were classified as structurally unsound? They are about to be rebuilt By Mary Scott Nabers
In Cape Cod, Massachusetts, an accelerated bridge is projected to cost more than $1 billion. Construction is forecasted for 2026.The Cape Cod peninsula juts into the Atlantic Ocean and its connectivity to mainland Massachusetts depends almost entirely on two bridges that were built in 1935. Those bridges—the Sagamore and the Bourne—are no longer capable of meeting modern transportation demands. The project will include prefabricating and building components off-site as the existing bridge is removed. A $400 million project in New York, slated to launch in 2023, will replace a bridge that has served as a lynchpin for rail travel along what has been one of the country’s most heavily used transportation corridors for over a century. The environmental review period has ended and the final design work for replacing the Livingston Avenue Bridge will proceed. Currently, the bridge’s deterioration has caused trains to cross in single-file and at speeds no greater than 15 miles per hour. A $1.8 billion bridge project has been announced for Connecticut. The plan is to select a contracting partner in 2023 for work on the Connecticut River Bridge. Within Connecticut, almost all passenger rail and freight services inevitably converge on the Connecticut River Bridge. The 115-year-old structure represents a critical juncture along Amtrak’s widely used Northeast Corridor as it supports freight trains and forms a foundational segment of passenger rail service. The proposed replacement will entail a two-track movable bridge structure with electrification and resilience components that include new tracks, improved signaling, sustainable power supplies, enhanced communication systems, and other security features. The Federal Lands Highway Program has become yet another source of funding for bridges. As an example of this program, an allocation of
22
csengineermag.com
June 2023
Made with FlippingBook Annual report