I-70 at Route 51 Interchange

Single Lane Restrictions Scheduled to Continue on I-70 Through Mid to Late October

Single-lane restrictions are slated to continue on I-70 between Exit 49 (Smithton) and Exit 46 (Pittsburgh/Uniontown) on: 

• Westbound I-70
  • Tuesday, September 29 until mid-October 

During the westbound restrictions, crews will conduct epoxy overlay on the bridge and final wearing course approaching the bridge.

• Eastbound I-70
  • Tuesday, September 29 until late October 

Throughout the eastbound restrictions, crews will perform modular dam and strip seal replacements. 

2026 Marks Final Construction Season

The final construction season will focus on completing remaining ramp connections, finishing DDI interchange features, and restoring all lanes of I-70 to their permanent configuration. Details include:

• Early April: Conduct driveway tie-ins along Route 51
• Mid April: Establish I-70 westbound permanent configuration
• June: Single-lane closures on Matthew Smelser Memorial Bridge to replace expansion dams and place epoxy overlay
• Late July/Early August: Wearing course paving along Route 51

Tips for your safety and the safety of highway workers can be found here.

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Project Overview Video

Watch this brief video to see how to safely navigate the DDI configuration.

Construction at the I-70/Route 51 Interchange began in late 2022 and will continue through 2026. Track construction progress with construction photos.