The proposed project is located in Maricopa County within the City of Phoenix on SR 303L from MP 135.74 to MP 138.60. The work consists of constructing new overpass bridges at 51st Avenue and 43rd Avenue, roadway excavation, Portland cement concrete pavement (PCCP), drainage facilities, asphaltic concrete, asphaltic concrete friction course (ACFC), signing, pavement marking, signals, freeway management system, lighting, and other related work.