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Contract Issued for Historic DC Bridge Rehab

Tuesday, December 5, 2017

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The efforts to rehabilitate a historic Washington, D.C., bridge got a major boost Friday (Dec. 1) with the announcement of $227 million in National Park Service funds for a design-build contract.

Arlington Memorial Bridge
Federal Highway Administration

The rehabilitation of Arlington Memorial Bridge will begin next spring.

Arlington Memorial Bridge, a 1932 bascule bridge made of masonry, steel and stone, spans the Potomac River, connecting Arlington National Cemetery with the National Mall and Memorial Parks. It carries 68,000 commuters each day, but has been under a 10-ton weight restriction since deterioration concerns spurred emergency repairs in 2015.

The Rehab Plan

Earlier this year, the NPS approved a rehab plan, Alternative 1B, for the bridge, but funding was not officially secured until last week. The agency, part of the Department of the Interior, announced that the job will be completed in about 18 months, via a design-build contract awarded to Kiewit Infrastructure.

The new design life of the bridge is predicted to be 75 years, with structural steel repainting to be performed every 25 years. Expansion joints and bearings will be replaced at 20-year intervals, while the concrete-polymer overlay is to be replaced at 40 years.

Bascule corrosion
National Park Service

The bascule segment of the bridge has been subject to the most serious deterioration.

The bascule segment of the 2,163-foot-long bridge has been subject to the most serious deterioration, and the drawbridge function has not been used since 1961. The chosen alternative will involve replacing the bascule span with a steel-girder span; this will save $30 million over plans that had been discussed involving preserving the bascule.

Minor repairs will begin in early 2018, according to the NPS, and the bulk of the project will be underway next fall. The rehab is reportedly the largest transportation project in NPS history.

Under Budget

The NPS says the design-build model helped to bring the project in under the originally forecast budget of about $250 million. The Kiewit contract is $192 million, with another $35 million budgeted for engineering, construction management, wetlands mitigation and contingency.

The contract will be administered by the Federal Highway Administration.


Tagged categories: Bridges; Carbon Steel; Federal Highway Administration (FHWA); Government contracts; NA; National Park Service; North America; Program/Project Management; Rehabilitation/Repair

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