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News » US » Kiewit lands Arlington Memorial Bridge refurb » published 5 Dec 2017

Kiewit lands Arlington Memorial Bridge refurb

Kiewit has been awarded a US$192m contract for a major rehabilitation of the Arlington Memorial Bridge in Washington, DC.

The winning design and build shaves US$35m and 1.5 years off the original plan.

Aecom and Hardesty & Hanover are also part of Kiewit’s design-build team.

“Repairing Arlington Memorial Bridge underscores President Trump’s commitment to rebuilding American infrastructure and is a major step in addressing the National Park Service’s $11.3 billion maintenance backlog,” said secretary of the interior Ryan Zinke. “The bridge is one of the largest transportation infrastructure projects in National Park Service history.”

Over the past six years, the National Park Service (NPS) and Federal Highway Administration (FHWA) have made emergency temporary repairs while planning the larger rehabilitation. Without a complete rehabilitation, the continued and accelerated deterioration of the bridge’s concrete deck would have required it be closed by 2021.

The overall project cost is US$227m, including provision for engineering, construction management, wetlands mitigation, and contingency

“We are happy to play a role in rehabilitating this iconic American bridge,” said acting federal highway administrator Brandye L Hendrickson. “Using state-of-the-art tools, techniques and engineering practices, we can improve the bridge’s safety and ensure it remains an active part of the nation’s capital.”

Major construction will start in fall 2018. It will replace the drawbridge span, rehabilitate the concrete approach spans, and replace the concrete deck. Workers will employ accelerated bridge construction techniques, including using prefabricated concrete deck panels. They will reset the stone curbs and light posts and restore the historic stone and metal cladding. The structure of the existing bascule span will be replaced with variable depth steel girders, which will extend the useful life of the bridge while reducing maintenance costs.  

The low, Neoclassical bridge is 2,163 feet long by 60 feet wide and was designed by McKim, Mead & White. Except for the bascule (drawbridge) span in the bridge’s center which is clad in metal, it is constructed from reinforced concrete faced with dressed North Carolina granite ashlar. When it opened in 1932, the bridge was the longest, heaviest and fastest opening drawbridge in the world; the drawbridge last opened in 1961. Today, it carries 68,000 cars per day.



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This article was published on 5 Dec 2017 (last updated on 5 Dec 2017).

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