Traffic Alerts - I-10 Houghton Road Traffic Interchange

I-10/Houghton Road ramps scheduled to close Aug. 31, Sept. 8

Houghton Ramp Closure Map

Two ramps at Interstate 10 and Houghton Road in Tucson are scheduled to close Monday, Aug. 31, and Tuesday, Sept. 8, as part of the interchange reconstruction project.

The exit ramp from westbound I-10 to Houghton Road will close Monday, Aug. 31, and the entrance ramp from Houghton Road to eastbound I-10 will close Tuesday, Sept. 8.  Both are scheduled to reopen just prior to Thanksgiving.

During the closure, traffic will be detoured to the Wentworth Road/Colossal Cave interchange and Mary Ann Cleveland Way. The I-10/Rita Road interchange will also serve as an alternate route after bridge repairs are completed.

The ramp closures will allow crews to reconstruct the ramps in one phase.

The Houghton Road bridge over I-10, the entrance ramp from Houghton road to westbound I-10, and the exit ramp from eastbound I-10 Houghton Road will remain open.

Interstate 10 and Houghton Road interchange reconstruction project scheduled to begin the week of Aug. 24

The Arizona Department of Transportation is scheduled to begin work on the Interstate 10 and Houghton Road traffic interchange reconstruction project the week of Aug. 24.

The project is designed to improve traffic operations in this growing part of the Tucson metropolitan area.  

Key elements of the project include:

  • Constructing a new six-lane bridge over I-10 just west of the existing bridge
  • Demolishing the existing bridge
  • Reconfiguring the interchange as a diverging diamond interchange 
  • Making improvements for pedestrians and bicyclists

For the first several days, traffic impacts should be minor while crews mobilize equipment and begin clearing areas near the work zone. 

Starting as soon as Monday, Aug. 31, the entrance ramp from Houghton Road to eastbound I-10 and the exit ramp from westbound I-10 to Houghton Road will close for nearly three months. The full closures of the two ramps will allow crews to reconstruct the ramps in one phase. Traffic will be detoured to the Colossal Cave/Wentworth Road interchange.

Except for the full closures of the two ramps noted above, work will be staged to keep Houghton Road, I-10 and the existing ramps open to the greatest extent possible, particularly during daytime hours. The following overnight traffic restrictions will be required at times during the project:

  • Lane restrictions on I-10 (a single lane in each direction)
  • Occasional closures of Houghton Road at I-10
  • Occasional closures of various ramps between I-10 and Houghton Road

The project is scheduled for completion in late 2021.