Map of construction project districts

Under Construction

Route 1 Widening

Undergrounding utilities and widening in Prince William County

Area Maps

Project Photos

Project at a Glance

Begin Date
May 2016

Est Completion Date
Fall 2019

$168 million

Fort Myer Construction

Prince William

Northern Virginia

Oscar Jamilla, DPE, PMP

Chan Basnayake, P.E., PMP, CCM

About the Project

Route 1 is being widened from four to six lanes between Marys Way and Annapolis Way. 

The project includes:

  • Enhanced access to the Woodbridge Virginia Railway Express kiss-and-ride facility
  • A new Route 1 bridge at Marumsco Creek
  • Improvements to Occoquan Road, including a median and turn lanes from Route 1 to south of Horner Road
  • Additional through and turn lanes on Route 1 and Occoquan Road to improve traffic operations
  • A ten-foot shared-use path and six-foot sidewalk
  • Demolition of several vacant buildings along the corridor

Route 1 currently carries about 35,000 vehicles per day.

Projected volumes for 2036 are 75,000 vehicles per day.

Traffic Impacts

Drivers can expect daytime and nighttime lane closures on Route 1.

Lane closures are required for paving, as well as to install water main, sewer, and drainage facilities.

Bridge construction over Marumsco Creek, retaining wall work near Potomac Plaza and excavation and grading work for southbound Route 1 are ongoing.

Drivers can expect lane shifts between Marumsco Creek and Occoquan Road this winter.  

Daytime lane closures can be expected Mondays through Thursdays, 9:30 a.m. to 3 p.m., and Fridays, 9:30 a.m. to noon.

Nighttime lane closures, when necessary, will be from 9 p.m. to 5 a.m. Monday to Friday, 9 p.m. to 9 a.m. Friday to Saturday, 9 p.m. to 8 a.m. Saturday to Sunday and 9 p.m. to 5 a.m. Sunday to Monday.

Motorists should expect delays and are advised to use alternate routes.

Total Estimated Cost

Preliminary engineering: $13.9 million
Right of way: $85.4 million
Utilities: Up to $12.1 million (Ductbank design and construction)  
Widening: $56.4 million
Total: $167.8 million


Route 1 Widening "Pardon Our Dust" Meeting, April 27, 2016

"Pardon Our Dust" meeting for utilities ductbank (March 9, 2015)

Public Hearing (March 2011)

Prince William County board resolution for undergrounding utilities (Dec. 2013)

Environmental documents:

UPCs: 14693, 105798, 94102, 100938
State Projects: 0123-076-F29, 0001-076-171, 0123-076-004, 0123-076-080
Federal Project: STP-111-1(114)

Bristol area projects Salem area projects Staunton area projects Lynchburg area projects Culpeper area projects Richmond area projects Northern Virginia projects Fredericksburg area projects Hampton Roads projects
Page last modified: Feb. 13, 2018