Map of construction project districts

In Design

Route 29 Widening

Union Mill Road to Buckleys Gate Drive in Fairfax County

Project Photos

Project at a Glance

Begin Date
Construction: 2022

In Design

$67 million

Lengths and Limits
Union Mill Rd to
Buckleys Gate Dr (1.5 mi)


Hong "Jenny" Ha, P.E.
Location & Design
Andrew Beacher, P.E.
Preliminary Engineering

About the Project

This project will widen 1.5 miles of Route 29 (Lee Highway) from four to six lanes between Union Mill Road and Buckleys Gate Drive. It will relieve a major bottleneck during AM and PM peak hours, with lengthy backups occurring in particular at the signal for Stringfellow/Clifton roads (Route 645).

The project will also correct vertical alignment to improve sight distance, add/improve bicycle and pedestrian facilities on both sides of Route 29 and provide connectivity to pedestrian/bicycle trails at the Fairfax County Parkway/West Ox Road interchange. Multiple public outreach efforts are planned.

Route 29 between Union Mill Road and Buckleys Gate Drive averages 33,000 vehicles a day.

Public Information Meeting: Fall 2018
Design Public Hearing: Winter 2018/19
Design Approval: Summer 2019
Begin Right of Way Acquisition: Winter 2019/20
Begin Construction: 2022

Estimated Costs
Preliminary Engineering: $5.7 million
Right of Way Acquisition/Utility Relocation: $21.5 million
Construction: $39.8 million
Total: $67 million

Project Numbers
State: 0029-029-350
UPC: 110329

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Page last modified: June 29, 2018