I-70/SR 9 Interchange (BEL-70-17.73)

The existing I-70 three-span concrete slab structure over the National Road Bikeway (abandoned railroad alignment) and Chambers Run was replaced with a 16-foot precast concrete arch structure on reinforced concrete pedestal walls and a 10’ x 6’ box culvert. Wingwalls and retaining walls for the replacement structures were constructed in excess of 25 feet tall, and temporary MSE walls were required for shoring and maintaining traffic. Construction was phased so that the precast arch and box culvert could be constructed prior to demolition of the existing structures, minimizing the impacts to the interstate traffic.