University Boulevard Extension


Prince William County, Virginia


Dewberry Consultants LLC


Public-Private Partnership


December 2013


In February 2011, the Prince William County Board of Supervisors awarded Shirley
Design-Build LLC (Shirley), a subsidiary of Shirley Contracting Company, LLC, the
University Boulevard Extension Project in accordance with the County’s Public
Private Transportation Act. Initially, Shirley provided comprehensive preliminary
planning and final engineering design and coordination services for the
University Boulevard Extension from Sudley Manor Drive to Hornbaker Road
and also included improvements to Hornbaker Road from north of University Boulevard
to Thomasan Barn Road as well as improvements to numerous connecting
roadways. The initial scope of work consisted of roadway and structural
design, utility relocation coordination and design, hydraulic and hyrdologic as
well as floodplain and stormwater management studies, comprehensive
environmental investigations and permitting, permit monitoring, right-of-way
acquisition as well as construction inspection services.

Construction of the University Boulevard Extension included a 3-lane half section of an
ultimate 6-lane roadway between Route 234 and Hornbaker Road and a 4-lane divided
roadway on a new alignment between Hornbaker Road and Sudley Manor Drive. Major
structures included a single span bridge carrying University Boulevard over a tributary of
Broad Run, a double 10′ x 6′ box culvert,a retaining wall to limit impacts to an adjacent
property, and 5 corrugated metal arches over an existing gas line. The Team was also
responsible for installing 5,300 LF of 30: water main.

The Hornbaker Road segment included demolition of the existing 2-loane roadway and
construction of a new 4-lane divided section for a distance of 6,850 LF. Minimizing impacts to
existing traffic during construction was a top priority and the Team developed a detained
Transportation Management Plan and implemented a three phase maintenance of traffic plan
that allowed construction to proceed while maintaining existing traffic.