Specifications include, but are not limited to: The Carolina Crossroads I-20/26/126 Corridor Improvement Project in Lexington and Richland Counties. This project is a multi-interstate, multi-interchange construction/reconstruction project to reduce congestion and improve mobility within the project corridor. The project corridor spans from I20 at the Saluda River crossing to the Broad River crossing; I-26 from Broad River Road to US-378; and I-126 from I-26 to Colonial Life Boulevard. The Project consists of, constructing new system interchanges at I-20/26 and I-26/126; associated widening portions of I-20/26/126; constructing collector-distributor lanes; reconstructing interchanges at I-26/Harbison Boulevard, I-26/St. Andrews Road, I-126/Colonial Life Boulevard, I-20/Bush River Road, I-20/Broad River Road; replacing bridges at I-26 and I-20 over the Saluda River; and associated roadway improvements to surface streets and approaches served by these interchanges and bridges.