Project Description

The existing 16th Street, NW Bridge over Military Road was in an advanced state of deterioration with the load rating prior to demolition only slightly above the legal level. This project, exemplifying safe, effective, and efficient construction, replaced the existing reinforced concrete rigid frame bridge, abutments and adjoining wing walls, with prefabricated superstructure units. Also included, replacement of the median barrier and improvement of streetlights. The bridge work entailed demolition of the old bridge span, building footing for the new bridge, bringing in the precast concrete deck, placing approaching slabs, sidewalk, walls, and striping.

 

 

Project Significance

Accelerated Bridge Construction (ABC) System was implemented, meaning innovative planning, design, materials, and construction methods are used in a safe, cost-effective manner to reduce the onsite construction time. Major components, like the girders and deck, were assembled off site, then delivered and set with minimal traffic disruption. While Fort Myer has a reputation for on-time delivery, DDOT exercised innovative contracting methods (incentive/disincentives) to assure the project was completed by July 15, 2015.
In addition to advanced construction and delivery methodology, this is the first project Fort Myer has deployed Ultra-High Performance Concrete (UHPC), which is an advanced construction material, setting to the highest strength. The Federal Highway Administration sought UHPC for this project because its advanced composite materials demonstrate mechanical, flexural, and durability properties far surpassing those of conventional concrete. This relatively new class of advanced material affords new opportunities for the future of roadway and bridge infrastructure.
 

In the News and Project Praise

The Washington Post’s Dr. Gridlock reported the good news that “DC plans early reopening of 16th Street Bridge“. The article posted on June 25, 2015 also included comments and praise from the public, including:

 “I drive over that bridge almost daily and have been amazed at the pace of progress. When it started, I figured it was going to go on much longer. Kudos to the crew on being so efficient.” – GG in DC

“When the project started, I just assumed that it would drag on for years. Having the bridge done by July 1st is stunning. We should all be impressed.” – sugarplum491

“Thanks and great job! As much as we motorists like to grumble when projects take too long, I am very happy to give kudos when the crews deliver early!!” – lilnemo