SR 80: San Pedro Bridge Replacement Project in St David


The Arizona Department of Transportation will be starting a bridge replacement project on State Route 80 in St David, AZ, spanning over the San Pedro River. The work will consist of removing the existing San Pedro River Bridge and replacing it with a continuous three span welded steel plate girder bridge. Additional work includes replacing guardrail and placing pavement markings.

What to expect during construction

  • Motorists should prepare for delays during peak traffic.
  • One travel lane will remain open at all times.
  • Traffic will be shifted during construction to allow crews to work on one side of the bridge at a time. Alternating lane restrictions will begin Wednesday, Dec. 14, 2022.
  • Temporary traffic signals at bridge access points will be used to regulate traffic in each direction.
  • A 10-foot vehicle width restriction will be in place.

Project Timeline

More information will be posted prior to the work. Schedule subject to change based on weather or other unforeseen factors. 


For oversized loads above the 10-foot vehicle width restriction, please use alternate routes. Consider using State Route 90 to State Route 82.

Stay Informed

ADOT welcomes your questions or comments. Please feel free to contact us in any of the following ways:

  • Online: Submit a question or comment through the ADOT website. Visit and then select “Projects” from the dropdown menu.
  • By phone: Call the ADOT Bilingual Project Information Line at 855.712.8530.
  • By mail: Write to ADOT Community Relations, 1655 W. Jackson St., MD 126F, Phoenix, AZ 85007.
  • For information about current project-related restrictions and closures, please visit or call 511, except while driving.

ADOT will provide more information about project schedules and potential traffic impacts as information becomes available. Stay informed about traffic restrictions before they occur by signing up to receive timely traffic alerts by email.