I-70 and SR 31 Interchange Improvement Project

Construction Underway

The project consists of the reconfiguration of the SR 70 and SR 31 Interchange with a new diamond interchange. This improved interchange will provide longer acceleration/deceleration ramps. The project also includes the replacement of a structure on SR 0070, the replacement of one structure on T-318 (Smithton Pike), and widening of mainline I-70. Both Smithton Pike and T-402 (Davis Road) will need to be relocated to accommodate the widening of the interstate. The project is located in South Huntingdon Township, Westmoreland County, PA. Guide rail, signing, pavement markings, and safety features will also be updated to current standards.