Major traffic impacts on Ajo Way near Interstate 19 begin Feb. 26

Ajo Way traffic interchange scheduled to open with new signals, lane configurations in early March

Motorists on Ajo Way near Interstate 19 should plan for traffic impacts and consider using alternate routes starting Feb. 26, as phase one of the traffic interchange project nears completion.

Starting at 3 a.m. Monday, Feb. 26, the exit ramp from southbound Interstate 19 to Ajo Way is scheduled to close for concrete paving. Traffic should detour to the 22nd Street/29th Street or Irvington Road interchanges.

The following restrictions are scheduled to begin at 3 a.m. Friday, March 2:

Ajo Way will close to all traffic above I-19 so crews can install new traffic signals and roadway striping for the new interchange configuration. Drivers who need to cross I-19 must use an alternate route, such as Irvington Road.
All traffic on eastbound Ajo Way must exit to southbound I-19.
All traffic on westbound Ajo Way must exit to northbound I-19.
The northbound I-19 off-ramp to Ajo Way will close.
The southbound I-19 off-ramp to Ajo Way will remain closed (see above).

All work is scheduled to be complete by 5 a.m. Monday, March 5.

Drivers should always proceed through the work zone with caution, slow down and watch for construction personnel and equipment.

The work is the final major step before the I-19/Ajo Way traffic interchange reopens, marking completion of phase one of this project. Intermittent lane closures are possible into early April as crews remove temporary pavement, complete landscaping and other cleanup items.

The existing traffic interchange was replaced with a Single-Point Urban Interchange (SPUI) over I-19. The new interchange features a widened Ajo Way bridge over I-19 with a single set of traffic signals controlling traffic entering and exiting the interstate instead of signals at two locations. The project also includes new on- and off-ramps to I-19 and noise walls to buffer adjacent residential and commercial areas from traffic noise generated by the interstate.

The second phase of the project is set to begin in the summer of 2018.

Highlights of the second phase of the project include:

Widening and reconstruction of portions of I-19 near Ajo Way
Replacement of the Santa Cruz River bridge on Ajo Way
Reconstruction and widening of Ajo Way from Holiday Isle to I-19.

For more information, visit the project website.

For questions and comments, call the ADOT Project Information Line at 855.712.8530 or email

Schedules are subject to change based on weather and other unforeseen factors. For real-time highway conditions statewide, visit ADOT's Traveler Information Site at, follow ADOT on Twitter (@ArizonaDOT) or call 511, except while driving.


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