ADOT making interim changes to improve SR 347 traffic

In spring 2023, ADOT completed a safety study on State Route 347 between Interstate 10 and the northern city limits of Maricopa. The Road Safety Assessment (RSA) identified potential issues related to roadway traffic and evaluated possible ways to improve safety for drivers.

As a result of this assessment, the improvements below will be implemented as interim measures to improve traffic conditions until more long-term improvements can be made. This work, some of which began in September, is anticipated to occur over the course of several months.

• Speed Adjustment: Crews will remove signs that currently reduce the speed limit from 65 mph to 55 mph when approaching intersections. This change is intended to increase compliance, reduce differential speeds, reduce the need for lane changing and potentially reduce rear-end crashes. However, ADOT reminds drivers to remain alert to traffic at such locations and maintain a speed that is reasonable and prudent for conditions.
• Striping Improvements: Restriping will occur in the following areas to add or extend turn lanes: Queen Creek Road/I-10 interchange, Riggs Road intersection, Casa Blanca Road intersection, Old Maricopa Road intersection and the Mammoth Way intersection.
• Signal and Signage Improvements: New traffic signs will be added or replaced at intersections. There will also be an additional signal pole installed at the eastbound I-10/Queen Creek off-ramp. Traffic signal timing has been adjusted and will continue to be monitored and adjusted as needed in the future. Reflective signal head backplates will also be installed.
• Median Crossovers: Four existing median crossovers will be refreshed as needed to allow access for emergency vehicle use. One additional median crossover will be created for an additional access point in the corridor. These locations are: milepost (MP) 177.81, MP 179.22, MP 184.24 and MP 188.62, as well as a new crossover at MP 185.77.

To learn more about these interim improvements and other SR 347 projects, visit www.azdot.gov/SR347. You can also download the full RSA report.

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Schedules are subject to change based on weather and other unforeseen factors. For more information, please call the ADOT Bilingual Project Information Line at 855.712.8530 or go to azdot.gov/contact and select Projects from the drop-down menu. For real-time highway conditions statewide, visit ADOT's Traveler Information Site at www.az511.gov, Need to know where a milepost is? Click on the "Mile Markers" icon on the map at www.az511.com. For real-time highway conditions statewide, visit ADOT's Traveler Information Site at www.az511.gov, download the AZ511 app or call 511.