Under Construction: I-95 Southbound Auxiliary Lane in Prince William County

Cost and schedule ►

Traffic alerts ►

Public outreach ►

Check out the below videos of an aerial simulation and driving simulator demonstration:

This project is creating an auxiliary lane on southbound Interstate 95 from Gordon Boulevard (state Route 123) to the Prince William Parkway (state Route 294).

The project is converting about a mile and a half of the existing shoulder to a travel lane, from the end of the existing entrance ramp from Route 123 to the beginning of the exit ramp to the Prince William Parkway. The project is also providing a new paved shoulder, relocating noise walls as needed, replacing impacted roadway lighting, installing or upgrading guardrails and building new retaining walls.

Southbound I-95 averages about 80,000 vehicles a day in this area.

All work is being done within the existing right of way and mostly beyond concrete barriers, with few traffic impacts expected.

Estimated Costs
Preliminary Engineering: $3.5 million
Construction: $20.2 million
Total: $23.7 million

The project is being completed as part of the I-95 Corridor Improvement Plan, and is financed with a portion of the concession fee provided under the 95 Express Lanes Project Comprehensive Agreement.


The auxiliary lane will make it easier for drivers to merge into and out of traffic between the ramps and free up additional room for through-drivers.

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 - December 2020
Award Construction Contract - March 2021
Begin Construction - June 2021
Final Completion - Fall 2022


Contact Info:

Reed Pinkney

Mehrdad Naderi, P.E.

Other relevant links:

Construction Start News Release - June 2021

Categorical Exclusion Document and 
Ad - June 2020

I-95 Corridor Improvement Plan

Previous Meetings >>

Major funding source: 95 Express Lanes Concession Fee

Phase: Under Construction

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: Aug. 24, 2022