Keep Sedona residents informed, the Arizona Department of Transportation is advising drivers and area residents and businesses to plan for an overnight closure of State Route 89A in Oak Creek Canyon from 9 p.m. Thursday, Aug. 10, to 5 a.m. Friday, Aug. 11.

Please plan accordingly.

Detours

• From Sedona: Northbound SR 89A will be closed to all traffic at the Cave Springs Campground at milepost 386. Detour: Drivers who normally would use northbound SR 89A can use southbound State Route 179 to northbound Interstate 17 to reach Flagstaff.
• From Flagstaff: Southbound SR 89A will be closed to all traffic at the Oak Creek Vista Overlook at milepost 390. Detour: Drivers who normally would use southbound SR 89A can use southbound I-17 to northbound SR 179 to reach Sedona.
• The overnight closure is needed so crews can safely continue working on the SR 89A Oak Creek Canyon Improvements project, which includes rockfall mitigation, erosion control and bridge rehabilitation.

Visit azdot.gov/SR89A for additional project information.

Schedules are subject to change based on weather and other unforeseen factors. For more information, call the ADOT Bilingual Project Information Line at (855) 712-8530 or email jstephens@azdot.gov.

SR 89A Oak Creek Canyon Improvement Project

The Arizona Department of Transportation, in conjunction with the Federal Highway Administration, has initiated a project on State Route 89A in Oak Creek Canyon that is expected to be under construction in early spring 2022 and anticipated to be completed in late 2023. The project cost is $11,111,111. The project includes:

• Rockfall Mitigation
• Drainage & Sediment Control
• Pumphouse Wash Bridge Rehabilitation
• The improvements are needed to continue maintaining safety and access along SR 89A.

Rockfall Mitigation

The rockfall mitigation work will help reduce the potential of rocks falling onto the roadway at two locations along SR 89A. The first location is north of Sedona city limits at milepost 375, and the second location is located in the switchback section of the roadway at mileposts 388-389.

To ensure the safety of drivers and work crews during rock-removal operations, intermittent closures of some parts of the highway will be necessary. A schedule of traffic restrictions will be provided prior to work beginning.

Drainage and Sediment Control

The work consists of drainage and sediment-control improvements by reducing erosion to preserve deteriorating slopes and reduce downstream pollution. The work between mileposts 388-389 includes installing concrete barrier, pipes, retaining wall, catch basin and gabion mattresses, roadside drainage excavation and other related work.

Pumphouse Wash Bridge Rehabilitation

The Pumphouse Wash Bridge is located on SR 89A at milepost 388. Options to either rehabilitate or replace the existing bridge have been under evaluation by ADOT engineers since 2006. After extensive study, it was determined a full replacement of the bridge would negatively impact endangered species, stream water quality and the historic nature of the bridge. These factors led to the determination that the bridge will be rehabilitated to extend its service life. Constructed in 1931, the bridge is listed on the National Register of Historic Places.

What to Expect During Construction

With the exception of limited daytime and overnight closures, SR 89A will remain open to traffic. Traffic restrictions using a combination of temporary traffic signals and/or flagging operation will be in place while the improvements are under construction. The roadway will be narrowed to one lane only through the work zones with alternating north- and southbound travel. ADOT is committed to completing the improvements as quickly as possible, while balancing the transportation and needs of local and nearby communities.

No full closures will be allowed during weekends outside of the allowable closure periods for SR 89A and state holidays. Schedules are subject to change based on weather and other unforeseen factors.