SR 347 Corridor Projects

ADOT has several planned improvement projects on the State Route 347 corridor between Interstate 10 and State Route 238 in the city of Maricopa. This segment of SR 347 is located primarily within the Gila River Indian Community (GRIC). Therefore, all studies and projects are being coordinated with GRIC, in accordance with federal and state regulations. Additional partners on these projects, depending on location, may include: the Maricopa Association of Governments (MAG), the Bureau of Indian Affairs, Maricopa County Department of Transportation, Pinal County and the city of Maricopa.

Projects Area Map

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SR 347 Road Safety Assessment

As the primary route from the city of Maricopa to the Phoenix area, State Route 347 (SR 347) has become a highly traveled corridor. In spring 2023, ADOT completed a safety study on SR 347 between I-10 and the northern city limits of Maricopa. The Road Safety Assessment (RSA) identified potential safety issues related to roadway traffic and evaluated possible ways to improve safety for drivers.

More info: http://azdot.gov/SR347/RSA

Riggs Rd Traffic Interchange at SR 347

Project Elements: Constructs a new interchange to fully separate traffic on SR 347 and Riggs Road to improve traffic flow and safety. ADOT is currently conducting an environmental study and Design Concept Report (DCR) to evaluate interchange alternatives and select a preferred alternative.

Anticipated Schedule: The study is expected to be completed in 2025. Construction is anticipated to begin in late 2027 and take approximately 12-18 months to complete.

Funding: This project is funded for construction.

More info: https://azdot.gov/planning/transportation-studies/riggs-road-traffic-interchange-sr-347

SR 347 Widening, I-10 to city of Maricopa

Project Elements: Adds one lane in each direction on SR 347 from I-10 to the city of Maricopa and makes intersection improvements for traffic flow and safety.

Anticipated Schedule: Project design began summer 2023 and is expected to take two years to complete. If funding is available, it will be ready to go to construction at the end of 2025.

Funding: This project is not currently funded for construction.

More info: https://azdot.gov/projects/central-district-projects/sr-347-corridor-widening-i-10-city-maricopa

Casa Blanca Road and Mammoth Way Intersections

Project Elements: Modify the intersection layout to improve traffic flow and safety. Will be designed as part of the SR 347 widening project.

Anticipated Schedule: Project design began summer 2023. The project is expected to be advertised for construction in mid-2025. Construction is expected to take approximately 12 months to complete.

Funding: These intersections are funded for construction.

More info: https://azdot.gov/projects/central-district-projects/sr-347-corridor-widening-i-10-city-maricopa

SR 347 Pavement Preservation

Project Elements: Repave SR 347 between I-10 (MP 189.3) and Lakeview Drive (MP 175.7) at the northern limits of the city of Maricopa to create a smoother drive and extend the life of the roadway.

Anticipated Schedule: Design began in fall 2023. Construction is anticipated to begin in late 2026 and take approximately 12 months.

Funding: This project is funded for construction.

John Wayne Parkway (SR 347) Improvements — SR 238/Smith-Enke Road to Maricopa City Limits

Project Elements: Adds a third northbound through lane on SR 347 between SR 238/Smith Enke Road and the northern limits of the city of Maricopa, makes intersection improvements at SR 347/Lakeview Drive and repairs pavement within the project limits.

Anticipated Schedule: This project was completed in May 2024.

More info: http://azdot.gov/johnwayneparkway

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