South Central Projects

State Route 77 from Tangerine Road to Pinal County Line

Traffic Alerts

SR 77 Traffic Switch in Catalina North of Tucson Begins March 8

Motorists traveling on SR 77 (Oracle Road), north of Oro Valley to Catalina, should be aware of the following traffic restrictions as the Arizona Department of Transportation prepares to detour SR 77 on Sunday, March 8. The work is part of a project to widen the roadway between Tangerine Road and the Pinal County line.

SR 77 traffic will be shifted to the northbound side of SR 77 between Wilds Road and Vistoso Commerce Loop by mid-March. Two lanes of traffic will be maintained in each direction.

  • North- and southbound SR 77 traffic will be unable to turn left between Wilds Road and Vistoso Commerce Loop during this work. (See map.)

SR 77 will be reduced to one lane nightly in both directions between Rancho Vistoso Boulevard and Wilds Road Sunday, March 8, through Thursday, March 12, from 8 p.m. to 5 a.m. for traffic signal, drainage and water improvement work.‎

The north- and southbound SR 77 shoulders between Tangerine Road and Eagle Crest Ranch Boulevard are closed through the remainder of the project.

The following right-turn bays will remain closed through 2015:

  • Southbound SR 77 between Vistoso Commerce Loop and Tangerine Road
  • Southbound SR 77 at Thistle Road
  • Northbound SR 77 at Golder Ranch Drive and Wilds Road

Additionally, intermittent driveway closures will continue along SR 77, north of Tangerine Road, from 7 a.m. to 4 p.m. weekdays through summer 2015 for utility work, cattle guards and drainage pipes. Driveway access will be maintained.

Drivers, cyclists and pedestrian are urged to be cautious while traveling through the work zone.

Law enforcement will be monitoring this area as the speed limit has change to 45 mph between Tangerine Road and Eagle Crest Road.

In addition, please be aware of the following traffic control:

  • Two lanes of travel in each direction will remain open through the work zone during the day.
  • The speed limit will be 45 mph during the day, but it may be reduced at other times.
  • There will be additional lane restrictions throughout the work boundaries as needed.
  • Cyclists will need to merge safely into the traffic lane during shoulder closures.

ADOT works to inform the public about planned roadway restrictions, but there is a possibility that unscheduled closures or restrictions may occur due to weather or equipment issues.

Drivers are reminded to share the road, be cautious and slow down while traveling through the work zone.

For more information about this project, please contact Paki Rico by calling 520.388.4233 or emailing