By early 1951, the bypass was under construction. Phoenix-Tempe was awarded a second contract on February 1, 1951, to build an overpass over the Santa Fe Railway in Yucca along with the approach roads to the overpass. In April 1951, a contract to construct of the new bypass was given to the W.J. Henson company for $234,872 (equivalent to $ in ). The Highway Department created another contract job in October 1951 to pave and construct a further of the bypass route, in hopes of speeding up the project. The Phoenix-Tempe company was again awarded the contract. Despite the highway's priority and rushed construction, the Yucca Overpass was delayed for several months due to a shortage of available steel. The steel was finally delivered to begin the overpass construction on January 25, 1951.