Loop 101 (Pima Freeway) Improvement Project: Interstate 17 to Pima Road

Loop 101 ramps closed at 7th Street

The Arizona Department of Transportation has initiated a project to widen and improve the Loop 101 (Pima Freeway) from Interstate 17 in Phoenix east to Pima Road in Scottsdale. Improvements are needed to address growing traffic demands in the northeast Valley and relieve traffic congestion on the Loop 101 during the morning and evening peak travel periods.

Major elements of this project include:

  • Adding one general purpose lane in each direction between I-17 and Pima Road
  • Adding an auxiliary lane in each direction between Seventh Street and Cave Creek Road
  • Constructing a new overpass structure at the future Miller Road alignment
  • Modifying freeway ramps and frontage road connections at 11 interchanges  

Additional components include construction of noise or retaining walls where warranted, improvements to drainage and new rubberized asphalt resurfacing and pavement markings.

This project is utilizing the design-build (D/B) method of delivery to help reduce the overall project timeline. This delivery method differs from the more traditional design-bid-build approach in which the project is completed in two phases (designed and then constructed).

The D/B method involves pairing civil engineering firms with construction contractors to create “design builders” who work synergistically from beginning to end. This creates more opportunities for innovation and can reduce costs. The D/B method of delivery is most advantageous when transportation improvements are needed immediately to reduce high traffic volume or chronic congestion. Learn more about the D/B project delivery method.

Traffic Shift between Scottsdale and Hayden roads

Loop 101 (Pima Freeway) Improvement Project: I-17 to Pima Road Traffic Shift - Scottsdale to Hayden Roads

The travel lanes on the Pima Freeway between Scottsdale and Hayden roads will be shifted around a new work zone that is being established in the freeway median (see illustration below).

The westbound travel lanes will be shifted between Scottsdale and Hayden roads by 5 a.m. Monday, Aug. 19, and the eastbound travel lanes will be shifted by 5 a.m. Monday, Aug. 26.

The traffic shift is needed to construct a new bridge that will travel over the city of Scottsdale’s future Miller Road extension. The traffic shift will be in place for approximately one year while the new bridge is being built. ADOT will maintain the same number of travel lanes during the traffic shift.;

The westbound travel lanes will be shifted between Scottsdale and Hayden roads by 5 a.m. Monday,

Aug. 19, and the eastbound travel lanes will be shifted by 5 a.m. Monday, Aug. 26.

The traffic shift is needed to construct a new bridge that will travel over the city of Scottsdale's future Miller Road extension. The traffic shift will be in place for approximately one year while the new bridge is being built. ADOT will maintain the same number of travel lanes during the traffic shift.

Project Progress in Photos

Crews lower the steel rebar cage into a 70-foot-deep shaft for the new abutment that will provide support for the freeway bridge being widened over the Cave Creek Wash near Seventh Street.
Crews lower the steel rebar cage into a 70-foot-deep shaft for the new abutment that will provide support for the freeway bridge being widened over the Cave Creek Wash near Seventh Street.
A worker constructs the forms for a new retaining wall along the westbound Loop 101 (Pima Freeway) west of Seventh Street.
A worker constructs the forms for a new retaining wall along the westbound Loop 101 (Pima Freeway) west of Seventh Street.