ADOT recommends Loop 303 detour to bypass upcoming lane restrictions near I-17

With lane restrictions coming to Interstate 17 on Wednesday, the Arizona Department of Transportation has a specific detour for drivers to take as delays are expected.

The restriction is for bridge construction, part of ADOT’s $129 million I-17/Loop 303 interchange improvement project that started in February.

ADOT encourages drivers to exit I-17 at the Dove Valley Road off-ramp and travel west on the road to southbound 43rd Avenue to reach westbound Loop 303 past the lane restriction.

Westbound Loop 303 will be narrowed to one lane between the I-17 interchange and 43rd Avenue from 5 a.m. Wednesday (Sept. 9) through October for I-17/Loop 303 interchange improvement project.

A detour is recommended.

MORE: https://t.co/Hd0jlLJFEO pic.twitter.com/8u6bESUkzn

— Arizona DOT (@ArizonaDOT) September 2, 2026

The detour is for the upcoming lane restriction on westbound Loop 303 between the I-17 interchange and 43rd Avenue. Westbound will be narrowed to one lane from 5 a.m. Wednesday through October.

The project is expected to be completed in 2028.

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