Replacement of New York Avenue Precast Bridge Deck in Washington, D.C.

Fort Miller’s high-precision fabrication was instrumental in meeting the aggressive schedule of this precast bridge deck replacement in Washington, D.C.

Project Stakeholders

• Owner: Washington D.C. Department of Transportation
• Contractor: Fort Myer Construction Corporation
• Engineer: T.Y. Lin International
• Post-tensioning Supplier: VSL USA

Project Overview

Replacing a critical bridge in the heart of Washington, D.C.’s transportation network is no small feat, especially when it spans multiple active rail lines with extremely limited access. 

The New York Avenue Bridge, serving one of the city’s busiest commuter corridors, had deteriorated over time and needed a complete overhaul. But working directly above operating railroad tracks presented a logistical puzzle: how to rebuild the bridge without months of closures or major service disruptions?

To meet this challenge, the project team adopted a forward-thinking solution: precast bridge deck panels that could be installed within narrow overnight work windows. This strategy allowed crews to replace large portions of the bridge deck quickly and safely during brief rail shutdowns. 

With Fort Miller’s precision-fabricated precast panels playing a central role, the project demonstrated how accelerated bridge construction can succeed even under the most demanding urban conditions.

Scope and Details

One of the unique aspects of this precast bridge deck replacement in Washington, D.C. was the use of full-depth deck panels with large cantilevered overhangs and post-tensioning ducts. 

Fort Miller Precast fabricated and supplied all of the deck panels for the project. Each panel featured a 12’10” cantilevered overhang beyond the exterior girders and was partially post-tensioned at Fort Miller’s facility prior to delivery to handle significant design stresses.

Once delivered to the jobsite, the construction crew installed the precast panels perpendicular to the new steel girders during short nighttime work windows, when rail traffic was paused. This overnight erection strategy minimized interference with both the active rail lines below and the urban roadway above. After placement, panels were joined with grouted joints and then post-tensioned together to form a continuous bridge deck.

Steel shear studs were welded through preformed pockets, and the haunches and pockets were filled with high-strength grout to create a solid connection between the precast deck panels and steel girders. Final cast-in-place concrete curbs and barrier walls were poured, and a protective overlay was applied to the driving surface.

A total of 122 precast deck panels were used: 66 for the westbound span and 56 for the eastbound span, all manufactured to tight tolerances by Fort Miller for exact on-site fit and installation efficiency.

Impact and Innovation

This project exemplifies the advantages of accelerated bridge construction using precast post-tensioned deck panels. The approach enabled rapid installation with minimal disruption to both road and rail traffic. 

Rather than stretching the project across months of staged work, the team executed deck replacements in overnight and weekend closures, keeping commuters moving and rail operations largely unaffected.

Fort Miller’s high-precision fabrication was instrumental in meeting the aggressive schedule. Each deck panel was engineered and manufactured to exacting standards, which allowed for fast placement with minimal field adjustments. The precast, post-tensioned deck system eliminated the need for extensive on-site formwork while enhancing quality control.

The successful completion of the New York Avenue Bridge deck replacement highlights Fort Miller’s role in delivering innovative, durable, and efficient precast solutions for complex urban infrastructure challenges. This project stands as a benchmark for bridge deck modernization in constrained environments, balancing speed, safety, and long-term performance.