Work continues briskly for a late-December 2019 opening of the $1.66-billion Loop 202 South Mountain Freeway in Phoenix, the largest highway construction project and highway public-private-partnership in Arizona history.
The 22-mile roadway includes the state’s first half diverging diamond interchanges and one of the state’s first highway double roundabouts. Additionally, the roadway spans the Salt River by using twin 2,600-ft-long bridges that incorporate the state’s first use of Utah bulb tee concrete girders. The history-making build also required extensive utility work as well as close coordination with neighbors, including the Gila River Indian Community.