Phoenix, Arizona. USA

Interstate I-10 - SR-143 System Traffic Interchange


Arizona Department of Transport (ADOT)



Construction budget

USD 600 million

Key facts

Urban freeway interchange reconstruction between the I-10 Broadway Curve which runs along 11 miles (17.7 km) of Interstate 10 between Loop 202 (Santan/South Mountain Freeway) and I-17 near Phoenix Sky Harbor International Airport.

Widening the I-10 to six general purpose lanes and two high occupancy vehicle (HOV) lanes in each direction between US 60 (Superstition Freeway) and I-17.

Additional lane between Ray Road and US 60.

Parallel collector/distributor roads to the I-10 between Baseline Road and 40th St.

Replacing the Broadway Road and the 48 St Bridges and widening the I-10 Bridges over Salt River.

New bridges for pedestrians and cyclists over the I-10.

Traffic density: 300,000 vehicles/day.

ADOT’s largest urban freeway reconstruction project to date on its road network


Detailed design

Work progresses on the interstate I-10 - SR-143 System Traffic Interchange in Phoenix

Arizona Department of Transportation (ADOT) is executing the largest urban freeway reconstruction project in its history with the I10 Broadway Curve Improvement, which runs along...


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