The Maricopa Regional Supplemental Noise Walls project consists of the design and construction of 10 walls within Phoenix, Peoria, Scottsdale and Maricopa County.

The Maricopa Association of Governments (MAG), in collaboration with its member jurisdictions, identified 10 locations within the Valley's freeway system where regional supplemental noise-mitigation walls will be built using voter-approved (2004) Proposition 400 funds. MAG advanced this project and referred it to ADOT for design and construction. The study that identified these locations was completed by MAG in June of 2008.

The walls will be constructed in heights ranging from five-to-20 feet, depending on needs at each location. It is anticipated that the walls will match the material type used on adjacent walls or on existing walls where additional height will be required.

These are the general locations of the 10 noise walls. Select a wall location to download the fact sheet (NOTE: There is not a Wall #1):

2. I-10 from 7th Avenue to 15th Avenue (north side) City of Phoenix *DESIGN UPDATE

3. Loop 101 (Agua Fria Freeway) and 51st Avenue (southeast corner) City of Phoenix

4. Loop 101 (Agua Fria Freeway) and 7th Street (northeast corner) City of Phoenix

5. Loop 101 (Agua Fria Freeway) from Peoria Avenue to Cameron Drive (east side) City of Peoria

6. Loop 101 (Agua Fria Freeway) from Olive Avenue to Peoria Avenue (west side) City of Peoria *DESIGN UPDATE

7. Loop 101 (Agua Fria Freeway) from Northern Avenue to Olive Avenue (west side) City of Peoria

8. Loop 101 (Pima Freeway) and 90th Street (northwest corner) City of Scottsdale

9. Loop 101 (Pima Freeway) and Cactus Road (northwest corner) City of Scottsdale

10. SR 51 and Greenway Road (northwest corner) City of Phoenix

11. Loop 303 from Deer Valley Road to North of Robertson Drive (east side) Maricopa County (Sun City West)

2009–Late 2010:   Design
2011 – Mid-2012:  Construction

Simultaneous construction of multiple walls at multiple locations is planned. Each wall could take as long as six months to complete. However, construction of the larger, or multi-phase walls, could extend beyond six months.

When construction begins, crews will work 8-10 hour shifts beginning at 5:00 or 5:30 a.m., Monday through Friday unless otherwise specified by city ordinance. Some occasional night and weekend work is possible.

The construction process will likely require traffic restrictions and/or detours on freeway lanes, on- and off-ramps, surface streets and multi-use paths which might impact motorists and pedestrians. Short-term impacts to area landscaping and community paths are expected throughout the project.

ADOT is committed to providing construction information to stakeholders and welcomes your comments and feedback. For further information and to request weekly project updates, call the project hotline at 1-855-712-8530 or email valleyfreeways@azdot.gov.

The Maricopa Regional Supplemental Noise Walls project was funded through the half-cent sales tax under the voter-approved Proposition 400.  Extra funding from the Quiet Pavement Prevention Pilot program, funded through Prop. 400, allowed for the opportunity to build these supplemental noise walls. (file size: 3.6MB)

Documents are posted as they become available in PDF format, which requires Adobe Reader to view.

Our Valley Freeway System is part of the 2004 voter-approved Regional Transportation Plan. We are working hard with our transit partners to implement the voters’ vision and are committed to quality, safety, open communication with our neighbors, and minimal inconvenience to the traveling public.