Traffic Alerts - SR 347 at Union Pacific Railroad

Traffic switch on Plainview Street near Maricopa-Casa Grande Highway scheduled to begin Tuesday, Sept. 10

Drivers who use the new Plainview Street near Maricopa-Casa Grande Highway (MCGH) should plan for a temporary traffic switch while the Arizona Department of Transportation continues work on the State Route 347 overpass project in Maricopa.

Starting at 4 a.m. Tuesday, Sept. 10, Plainview Street will switch from one-way to two-way traffic between MCGH and just north of Arizona Avenue. 

While the temporary traffic configuration is in place, drivers will be able to use Plainview Street to enter and exit the highway. During this time, Fourth Street will be closed north of MCGH.

Drivers can continue accessing the nearby businesses and shops located at Stagestop Marketplace by using a temporary driveway via Plainview Street.

The traffic switch will be in place for approximately 30 days so ADOT crews can complete their work to widen and reconfigure MCGH near the new SR 347 overpass.

Alterra Parkway to close at State Route 347 in Maricopa beginning Monday, Aug. 5 through September
Use Bowlin Road as detour

SR 347 at Union Pacific Railroad closure map

The Arizona Department of Transportation is advising drivers that Alterra Parkway will be closed at State Route 347 in Maricopa beginning Monday, Aug. 5. The closure will remain in place through September as work continues on the construction of a new intersection at Alterra Parkway and SR 347 as part of the SR 347 overpass project.

As a result of the closure, which will begin at 5 a.m. Monday, drivers will not be able to turn westbound onto Alterra Parkway from SR 347 or access SR 347 eastbound from Alterra Parkway.

SR 347 will remain open to both north- and southbound traffic, and Desert Cedars Drive east of SR 347 will remain open.

Drivers should use Bowlin Road as a detour.

Schedules are subject to change based on weather and other unforeseen factors. Subscribe to receive project updates and traffic alerts by email. For more information, please call the ADOT Bilingual Project Information Line at 855.712.8530 or submit a question or comment by email. For real-time highway conditions statewide, visit ADOT’s Traveler Information Site at, follow ADOT on Twitter (@ArizonaDOT) or call 511, except while driving.