Route 27/244 Interchange Modification


CLIENT:

Virginia Department of Transportation (VDOT)

DESIGNER:

Dewberry Engineers Inc.

DELIVERY METHOD:

Design-Build

COMPLETION DATE:

September 2015

 

In August 2011, Shirley as the Lead Contractor and Dewberry as the Lead
Designer, were awarded the Route 27/244 Interchange Modifications Design-Build
Project by VDOT. The Project included the complete reconstruction of the existing 70-
year-old bridge carrying Route 27 over Route 244. The new, longer, and wider bridge
included significant aesthetic features which were the result of years long coordination
between VDOT, the Bridge Working Group, and representatives of the Freedman’s
Village Historic District. The scope included haunched girders with a two-tone paint
scheme to mimic the arch structure of the old bridge, memorial pylons at the
bridge corners, and decorative parapets and abutment walls to match renderings
developed through the public coordination. In addition, the Project included reconfi
guration of the interchange ramps to improve safety and community access,
signalization of three intersections, removal of one existing traffic signal along Route 244,
overhead sign structures, shared use path and sidewalk facilities with connections
to existing facilities on Route 244, retaining walls, box culverts, major drainage
structures, right-of-way acquisition, utility relocations, sound barrier, storm drainage,
storm water management and landscaping.

A significant element was the replacement of an existing 10’x7.5’ box culvert that
conveyed Long Branch through the center of the Project and was integral with
the substructure of the existing bridge. The Team developed a culvert and bridge
design concept with a new double 10’x10’ culvert aligned through the bridge
abutments. This alignment optimized the culvert length and minimized the impacts to
the Long Branch Flood Plain. The construction was phased in segments with up to
30 feet of shoring between phases of this deep culvert to avoid expensive tunneling
methods. The culvert outfall was extended 75 feet downstream to correct erosion
on the steep slopes of Long Branch that had been a continual maintenance problem
for Arlington County and threatened homes on the south side of the interchange.
The culvert outfall extension was covered with geotextile fabric and lined with rip rap.

Shirley was responsible for management and oversight of construction,
including design and engineering, right-of-way acquisitions, permitting, utility
relocations, public outreach, overall Project administration and construction
management, and QA and QC. Shirley was the primary point of contact with the
Owner in public relations and getting notices out to traveling motorists, businesses,
homeowners and local politicians. The Project received several awards including the
2016 DBIA National Award of Merit and the 2016 DBIA Mid-Atlantic Excellence in
Engineering.