We Did It — Thanks to You! 🎉

Because of thousands of voices like yours, ADOT has officially placed SR 347 on its 5-year plan. Your support made a real difference — but the work isn't over yet. Stay informed on progress, milestones, and ways you can continue to help by joining our email list.

Picture of SR-347 Southbound from Maricopa Rd
SR 347 Accident

The Dangerous Reality of SR 347

SR 347 is the only access route for the city of Maricopa, Arizona, and its surrounding communities. With a rapidly growing population and increasing traffic, this two-lane highway has become a dangerous bottleneck, leading to numerous accidents and fatalities.

80+

Fatal or serious injury accidents in the last 10 years

2,500+

Total accidents in the last 10 years

Insights into SR-347 Accidents

A breakdown of accidents, fatalities, and injuries on SR 347 over the past decade.

Accidents along SR-347
A total of 2,524 accidents occurred on SR-347 between January 1, 2014 - December 31, 2023
Data collected from the Arizona Department of Transportation (ADOT) via a public records request.
Accident Severity along SR-347
Select a year to view accident counts on SR-347, categorized by severity.
Data collected from the Arizona Department of Transportation (ADOT) via a public records request.
Yearly Fatalities Along SR-347
Fatalities on SR-347 show significant fluctuations, peaking at 8 in 2017 and 9 in 2022, with the lowest at 1 in 2023.
Data collected from the Arizona Department of Transportation (ADOT) via a public records request.
Yearly Injuries Along SR-347
Injuries on SR-347 peaked at 146 in 2016, with generally high numbers, averaging above 100, from 2014 to 2023.
Data collected from the Arizona Department of Transportation (ADOT) via a public records request.
Yearly Breakdown of SR-347 Accidents
View monthly accident trends for each year between 2014 and 2023.
Data collected from the Arizona Department of Transportation (ADOT) via a public records request.
Accidents on SR-347 by Hour
Accidents by hour along SR-347 between January 1, 2014 - December 31, 2023
Data collected from the Arizona Department of Transportation (ADOT) via a public records request.

Funding Statuses and Timelines

Learn about the current funding status of SR-347 and the timeline for upcoming projects.

Riggs Road Overpass

  • Study/Design Funded
  • Part of ADOT 5 year plan
  • Construction expected to begin in late 2027

Design for Corridor Widening

  • Funds allocated
  • Part of ADOT 5 year plan
  • Design currently underway

Intersection Improvements at Casa Blanca Rd and Mammoth Way (Cement Plant Access Rd)

  • $18M funded in 2023
  • $1.9M in supplemental funding added in 2024
  • Part of ADOT 5 year plan
  • Scheduled to begin in late 2025

Queen Creek Overpass

  • Part of I-10 widening project

Widening of SR-347

  • Part of ADOT 5 year plan
Visit the Arizona Department of Transportation's website to learn more about these projects at www.azdot.gov/SR347.