In Design: I-95 Southbound Auxiliary Lane in Prince William County

Cost and schedule ►

Public outreach ►

Note: The Categorical Exclusion environmental document can be viewed here and the public notice here.

design public hearing was held Dec. 4. 

Attendees were able to simulate driving the planned auxiliary lane, check out the below videos of the aerial simulation and driving simulator demonstration:

Meeting Materials and Displays

This project will construct a 1.5-mile auxiliary lane on southbound I-95 from Route 123 (Gordon Boulevard) to Prince William Parkway (Route 294). All work will be done within the existing right of way.

Southbound I-95 averages 92,000 vehicles a day within the project limits.

Estimated Costs
Preliminary Engineering: $3.4 million
Construction: $28.7 million
Total: $32 million

This project is financed with federal and state funding, as well as part of the concession fee provided under the 95 Express Lanes Project Comprehensive Agreement.


This project aims to relieve congestion and improve safety and operations.

Major Milestones 

Public Information Meeting (Interstate 95 Corridor Improvement Plan) - October 2019
Design Public Hearing - December 2019
Categorical Exclusion Available - June 2020
Advertise for Construction - Winter 2020/21
Begin Construction - Spring 2021


Contact Info:

Calvin Britt, P.E.
Location & Design

Angel Tao, P.E.
Preliminary Engineering

Other relevant links:

Categorical Exclusion - June 2020

Document and Public Notice

Previous Meetings >>

Major funding source: 95 Express Lanes Concession Fee

Phase: In Design

UPC: 115999

State ID: 0095-076-276, P101

Federal ID: RSTP-0952 (542)

Lat/Long: 38.667756, -77.269957

Locality: Prince William

Page last modified: July 20, 2020