The I-20 Bridge over Wateree River and Overflow Bridges Project entails replacing the east and westbound bridges of I-20 Highway over the Wateree River, as well as one overflow bridge on eastbound I-20. It also includes rehabilitating two overflow bridges (both east and westbound) in Kershaw County, and any associated approach roadway work necessary to connect the new bridges to the I-20.

All the bridges were built in the 1970s and have reached the end of their service life, requiring a combination of replacement and repair work. 

The replacement portion of the project includes the construction of a temporary bridge to maintain traffic on the I-20, the construction of a new bridge and superstructures, and the demolition and removal of the existing bridges.