State Route 347 at Union Pacific Railroad

SR 347 Union Pacific Railroad inset map

The Arizona Department of Transportation reached a major milestone earlier this summer when about 2 miles of State Route 347 shifted to a new alignment between Hathaway Avenue on the north and Alterra Parkway/Desert Cedars Drive on the south.

As a result of the traffic shift, motorists are now benefiting from the centerpiece of the project: a 500-foot-long bridge carrying traffic over the Union Pacific Railroad tracks and Maricopa-Casa Grande Highway.

While the project is about 80% complete and on schedule to finish by the end of the year, a lot of work remains. This includes removing the former at-grade railroad crossing, widening Maricopa-Casa Grande Highway between the overpass and Plainview Street and transforming the old SR 347 alignment into a new roadway.

ADOT has created a temporary detour and business access map to help motorists navigate their way through the heart of Maricopa during the third, and final, phase of construction.

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