Express Lanes Corridor Reconstruction
Sixteen miles of freeway rebuilt with new express lanes and 22 bridges, with four lanes open each way every day of construction.
- Owner
- Confidential
- Location
- U.S.
- Our role
- Design-build contractor
- Delivery
- Design-build
- Scale
- 16 corridor miles
- Completed
- 2025
Sixteen miles of freeway rebuilt with new express lanes, 22 bridges and tolling gantries, while four lanes stayed open in each direction for the entire job.
The corridor carried heavy commuter and freight traffic and could not lose capacity. New express lanes, bridges, ramps and drainage had to be built in phases under traffic, with lane closures limited to nights. Utilities crossed the corridor in dozens of places, right-of-way was still being acquired when work started, and tolling systems had to be installed and tested before the lanes could open.
The approach.
- 01
Traffic phases as the backbone
The schedule was built around approved traffic phases, so every work zone had a safe lane plan before crews mobilized.
- 02
Utilities and right-of-way tracked as risks
Each utility conflict and parcel had an owner, a date and a schedule link, and the agency saw weekly which ones threatened the path.
- 03
Bridges built in parallel
Bridge crews worked several structures at once, with girder sets packed into planned overnight closures.
- 04
Tolling tested before opening
Gantries, detection and back-office systems were tested end to end with the agency before the express lanes opened.
The outcome.
“Every night closure had a reopening time, and we never missed one. That is the promise that keeps a corridor job on track.”
Night superintendent, Jacob Wiseman
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