Traffic Alerts - I-40: West Flagstaff Bridge Replacement

Interstate 40 narrowed to one lane in each direction at West Flagstaff Bridge beginning March 29

Drivers should allow extra travel time

Drivers in northern Arizona should plan for traffic restrictions on Interstate 40 over the next several months beginning Monday, March 29, while work continues on reconstructing the West Flagstaff Bridge (Exit 191).

The restrictions will be in place through October.

ADOT reminds drivers to slow down and observe posted speed limits and other construction signs while the following restrictions are in place:

  • East- and westbound I-40 will be narrowed to one lane in each direction from Route 66 (milepost 190) to Flagstaff Ranch Road (milepost 193).
  • The speed limit will be reduced to 55 mph.  
  • A 14-foot vehicle width restriction will be in effect.

Additional restrictions, which are already in place, include:

  • Eastbound I-40 on- and off-ramps at the West Flagstaff Bridge (Exit 191) and the crossroad under the bridge will be closed.
  • Detour: Eastbound I-40 drivers accessing I-40 Business Loop/West Route 66 will be detoured to Flagstaff Ranch Road (Exit 192). I-40 Business Loop/West Route 66 drivers accessing eastbound I-40 will be detoured east to A-1 Mountain Road (Exit 190) to turn around and re-enter eastbound I-40.

The closures are needed so crews can begin work to replace the West Flagstaff Bridge over Business 40, which connects the interstate to Historic Route 66 in west Flagstaff.

The project, which is about 3 miles west of the junction with Interstate 17, is anticipated to be completed by fall 2022.

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