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89A Switchbacks Closure Lifted Early

June 24
15:59 2014

ADOT LogoGood news for drivers traveling between Sedona and Flagstaff as the Arizona Department of Transportation has lifted the closure of the “switchbacks” section of State Route 89A well ahead of a scheduled July 2nd opening. There are currently no construction/fire-related restrictions along SR 89A between Sedona and Flagstaff.

The three-mile section of SR 89A (mileposts 387-390) between the Pine Flat Campground and the Vista Point scenic overlook south of Flagstaff was closed to allow crews to resurface the highway along this narrow, twisty section of roadway, which is prone to rockfalls. As part of the $2 million improvement project, ADOT removed loose rocks from the mountainside along the roadway and made deck repairs to the historic Pumphouse Wash Bridge.

The project began on April 21, with single lane restrictions in place along the switchbacks. The five-week full closure of the highway had originally been scheduled from May 27 – July 2, but crews were evacuated from the project on May 20, at the start of the Slide Fire. The wildfire originated approximately six miles south of the project near Slide Rock State Park and forced the closure of the highway from Sedona to Fort Tuthill in Flagstaff. Work on the project resumed on June 1, shortly after local authorities lifted wildfire-related restrictions near the highway.

ADOT had a limited window in which to complete the paving work in this region (June – August) because applying new pavement is extremely temperature sensitive. The goal was to complete the pavement improvements prior to the rainy monsoon season, which could have delayed the project significantly.

ADOT will need to return next month to complete final lane striping through the project corridor. A single-lane restriction will be required and flaggers will be present to guide traffic through the work zone.

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