Phoenix Metro Area Projects

Loop 101 Widening Project: Shea Boulevard to Loop 202

The Loop 101 Improvement Project between Shea Boulevard and Loop 202 (Red Mountain Freeway) recently marked a key milestone with the completion of a new pavement overlay along the freeway’s southbound lanes. The new one-inch top layer of rubberized asphalt was needed before the project team could open the new right lanes along the southbound Pima Freeway.

Weather conditions do provide a challenge for paving crews. Rubberized asphalt, which includes a mixture of rubber from recycled tire and heated liquid asphalt, requires a favorable temperature range for the best results when it is being added along a freeway. Paving schedules were adjusted at times this spring due to weather that was either too cool, too hot or too wet.

Specialized work to lift a portion of northbound pavement that had dipped over time near McDonald Drive, due to ground settlement beneath the freeway, is scheduled to wrap up later this month. Crews have been working at night to inject an expansion foam beneath the northbound lanes. As the foam expands it also hardens, stabilizing the soil while also lifting the freeway pavement.

Rubberized asphalt paving along the northbound lanes is due to resume on weekends when favorable weather conditions are in place. ADOT will continue to keep motorists up to date on scheduled closures or restrictions via news releases, emailed project updates as well as messages on signs along freeways in the region. The entire project is slated for completion by fall 2016.

Information about the project is available at

ADOT will provide advance notification of full closures or significant restrictions that affect drivers or the community, as well as information about detour routes. For detailed information on weekly construction-related closures and restrictions, check the Traffic Alerts page.

ADOT's two and one-half year construction project that began in summer 2014 will widen the Loop 101 from Shea Boulevard to the Loop 202 (Red Mountain Freeway) interchange. Once completed the project will include these features:

  • An additional travel lane southbound from Shea Boulevard to McKellips Road
  • An additional travel lane northbound from McDowell Road to Shea Boulevard
  • Two additional travel lanes from the northbound Loop 101 / Loop 202 interchange entrance ramp to McDowell Road
  • Chaparral Road traffic-interchange improvements
  • A quieter and smoother driving experience due to the use of rubberized asphalt on the widened roadway surface

From the ADOT Blog

Work continues on Loop 101 widening project

Oct. 23, 2015

Since work on the Loop 101 (Pima Freeway) widening project is more than 50 percent complete, we thought now would be the perfect time for an update. Full story ...

Loop 101 drivers are urged to slow down in the work zone

Oct. 5, 2015

Drivers need to slow down in the work zone! Crews on the Loop 101 project have noted that not all motorists are adhering to the reduced limit through the project zone. Full story ...

Work on Loop 101 widening project continues

July 17, 2015

It's been a while since we last checked in on the Loop 101 widening project, so we thought we'd take a look and see how work is progressing. Full story ...

ASU landscape architecture students get Loop 101 tour

May 5, 2015

Learning doesn't always have to take place inside of a classroom, sometimes it can happen safely near the side of a freeway! Full story ...

Check it out: Loop 101/90th Street bridge time lapse

March 18, 2015

On Feb. 28, 2015, ADOT lowered a newly built bridge four feet to its final position. Full story ...

Loop 101 project update

Nov. 26, 2014

Work is progressing on the Loop 101 widening project we first told you about in August (and then again in September).

As northeast Valley drivers have surely noticed, crews are currently working to widen bridges within the project area and build retaining walls and sound walls. Full story ...

Loop 101 project scheduled to begin this weekend

Aug. 8, 2014

A major project that will add new lanes in both directions of Loop 101 between Shea Boulevard and Loop 202 (Red Mountain Freeway) is scheduled to begin this weekend (August 9-10). Full story ...