Design & Construction Details

Design Activities

Traffic Advisories

December 2, 2019
Single-Lane Patterns through Tuscarora Tunnel to Begin This Week

February 20, 2020
Eastbound Tuscarora Tunnel Closure Begins This Sunday

July 10, 2023
Single-Lane traffic patterns to continue from 9pm Sunday to noon on Thursday each week until Labor Day

January 18, 2024
Regular Single-Lane traffic patterns through Tuscarora Tunnel completion

Four Week Lookahead

Work continues into spring 2024 in the east and west portal buildings, including new generator installations, painting of floors and final testing of new tunnel computer and data controls.

Current Detours

There are no detours at this time.

Construction Activities

Project Details

Multiple tasks will be completed while the tunnel is under construction. Some improvements will be made in both tunnels, while others will only apply to one tube. Major tasks associated with this tunnel improvement project include:

Upgrade fire/life safety/communication systems
Upgrade electrical systems including new back-up generators
Upgrade mechanical system
Replace walkway and roadway barriers
Replace drainage system
New lighting system
New tunnel control system
New ventilation system
Improve tunnel entrances
Remove existing ceiling
Install a PVC membrane waterproofing system and shotcrete liner
Widen travel lanes

Four Week Lookahead

Work continues in the westbound tunnel including installation of new lighting, new drainage system and shotcrete placement. Work also continues at both east and west portal buildings.

The scope also includes full-depth replacement of approach roadways and rehabilitation of dual mainline two-span continuous deck I-beam bridges at MP 185.9. Bridge tasks include deck repairs; installation of membrane waterproofing and bituminous overlay; asphaltic plug expansion joints, painting, new concrete end diaphragm; and installation of a wingwall buttress.