Plan ahead to avoid westbound I-10 weekend closure in west Phoenix

Posted: Updated:
(Source: Arizona Department of Transportation) (Source: Arizona Department of Transportation)

Motorists traveling to the West Valley this weekend should allow extra travel time and  plan ahead to avoid a closure of westbound Interstate 10 (Papago Freeway) between 51st and 67th avenues for construction of the Loop 202 South Mountain Freeway, according to the Arizona Department of Transportation.

Westbound I-10 will be closed between 51st and 67th avenues from 10 p.m. Friday, May 18, to 5 a.m. Sunday, May 20. 

With heavy traffic and delays expected, ADOT recommends drivers consider alternate routes such as Loop 101 (Agua Fria Freeway) west of I-17.

During the closure, westbound I-10 traffic will be able to exit the freeway at 51st Avenue, detour either north to McDowell Road or south to Van Buren Street and return to westbound I-10 at 67th Avenue. The newly-built westbound I-10 access road between 51st and 67th avenues will also remain open during construction. 


The westbound I-10 on-ramps at 35th and 43rd avenues will be closed to help reduce backups. In addition, 59th Avenue will be closed in both directions between McDowell Road and Van Buren Street. 

The closure will allow crews to pour concrete for a structure, known as a straddle bent, that will support one of the flyover bridges connecting I-10 with the South Mountain Freeway. 

Following this weekend’s closure, westbound I-10 will be narrowed to one lane with intermittent closures nightly beginning Sunday through Thursday, May 20-24, from 9 p.m. to 5 a.m. for bridge construction. 

The 22-mile South Mountain Freeway, expected to open by late 2019, will provide a long-planned direct link between the East Valley and West Valley and a much-needed alternative to I-10 through downtown Phoenix. Approved by Maricopa County voters in 1985 and again in 2004 as part of a comprehensive regional transportation plan, the South Mountain Freeway will complete the Loop 202 and Loop 101 freeway system in the Valley.

ADOT works to inform the public about planned highway restrictions, but there is a possibility that unscheduled closures or restrictions will occur. Weather can also affect a project schedule. To stay up-to-date with the latest highway conditions around the state, visit ADOT’s Arizona Traveler Information site at or call 511.

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