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PODCAST: Traffic engineering's role in safely connecting Arizonans

Where do speed limits come from? How are highways engineered, signed, striped, etc., to maximize safety? To explain these and other aspects of state highways, we're pleased to have State Traffic Engineer Kerry Wilcoxon as this week's On the Road With ADOT guest. 
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Daytime lane restrictions scheduled to resume Dec. 1

The Arizona Department of Transportation advises drivers there will be no lane restrictions on US 70, between Reay Lane and Eighth Street (mileposts 335.6-340), from Nov. 24-28.

Eastbound US 70 right lane restrictions between mileposts 335.6 and 340 scheduled daily from 6 a.m. to 5 p.m. will resume Monday, Dec. 1, as crews continue ADA ramp work.

  • Motorists should plan for rolling lane restrictions as crews work in multiple sections each day throughout the project area.
  • The speed limit will be reduced to 35 mph in the work zone.

Drivers should allow extra travel time, use caution, be prepared to slow down and merge safely when approaching and traveling through all work zones.

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Helicopter landing area at Superior Airport
2 October 2025

ADOT program supports community airports across Arizona

ADOT develops its Airport Capital Improvement Program in conjunction with the FAA and Arizona’s 67 publicly owned and operated airports, including ADOT-operated Grand Canyon National Park Airport.
Adopt a Highway

Volunteers bag 1.8 tons of litter on National CleanUp Day

See Adopt a Highway volunteers across Arizona caught in the act on National CleanUp Day 2025.
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Notice Of Funding Availability

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ADOT Project Map showing Perkins Valley Road bridge project area at milepost 283 on I-40 near Holbrook, including Golf Course Road and Express Drive.

I-40 Perkins Valley Road Bridge Rehabilitation

Project Cost: $6.7 million

The Arizona Department of Transportation has initiated a bridge rehabilitation project along Perkins Valley Road over Interstate 40 near Holbrook.

Work on this project is scheduled to be completed by fall 2026.

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US 89 between Bitter Springs and Page after a pavement refresh
30 September 2025

Project Spotlight: US 89 at Echo Cliffs gets fresh surface

This chip seal and slurry seal project is another way ADOT works to safely connect people and empower the economy across Arizona. The project also supports ADOT’s commitment to protecting Arizona’s
Specialty plates featured in September.

September recap: Specialty Plate Spotlight

ADOT has more than 100 specialty license plates featuring a range of worthy causes or charities. To boost awareness, we showcase one specialty license plate each week on social media. We call this the "Specialty Plate Spotlight" and here are the plates that were featured in September.
Photo of striping work at Grand Canyon National Park Airport
30 September 2025

Grand Canyon National Park Airport completes runway upgrade

Grand Canyon National Park Airport, operated by the Arizona Department of Transportation, has completed a $12 million runway rehabilitation that enhances safety and improves operational efficiency.
Project area map showing the connector road along James Ranch Road, connecting to both State Route 80 and the new port of entry

Douglas International Commercial Port-Of-Entry Connector Road

The Arizona Department of Transportation (ADOT) is currently in the design phase for a new connector road between State Route 80 and the planned new Douglas Land Port of Entry for commercial vehicles, which will help streamline commercial truck traffic flow between the U.S. and Mexico.

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