I-40

A highway repair project along westbound Interstate 40 near Williams will start the week of April 6-10 with an around-the-clock lane closure. Learn more here about what drivers should plan for when the work zone is in place.

The $7.8 million project began in April 2025 just west of the New Mexico line on I-40. Crews removed the old structure and replaced it with a 223-foot reinforced concrete beam and girder bridge serving the commercial and residential areas around it on the Navajo Nation.

The Arizona Department of Transportation has entered the final year of work on a project to construct a free-flowing interchange that will reduce delays on the main route between Arizona and Las Vegas.

Spring weather will allow work to continue or start in the coming weeks on highway improvement projects across Northern Arizona. Learn more about some of these major projects here.

Also in 2026, ADOT will launch a project to transform the final two-lane section of State Route 260 between Payson and the Mogollon Rim into a four-lane highway. And in Kingman, work will continue on a free-flowing interchange connecting Interstate 40 and US 93.

The $2.1 million project, which began in September 2024, improved a route commonly known as Navajo Boulevard in downtown Holbrook, which is home to dozens of businesses. Other improvements included ADA-compliant sidewalk ramps.

This $30 million improvement near Petrified Forest National Park removed the top layer of pavement between mileposts 319 and 331 and replaced it with an asphalt-mix overlay. Crews also replaced the eastbound I-40 Dead River Bridge deck to extend the structure’s life and enhance safety.

The Arizona Department of Transportation has reached the halfway mark on a  $106 million project to construct a free-flowing interchange that will reduce delays on the main route between Las Vegas and Arizona.

Rock blasting work will require a full closure of US 93 northwest of Kingman the night of Tuesday, Aug. 26, as part of the ongoing project to construct a free-flowing interchange between Interstate 40 and US 93.

The Arizona Department of Transportation is well on its way to creating a new Interstate 40 interchange in east Kingman that will enhance access to a growing area around the community’s airport. 

A new interchange that will eliminate delays between Interstate 40 and US 93 in Kingman. A widening project to improve safety on US 93 between Phoenix and Kingman. A project replacing rough pavement on a section on I-40 with smooth asphalt.

Motorists on westbound Interstate 40 in Kingman should plan ahead for overnight restrictions and full closures of up to 30 minutes the nights of March 10, 13, 17 and 20.

This historic effort in underserved and unserved areas is possible because of a state law that allows private broadband providers to install, operate and maintain telecommunications equipment within ADOT’s right of way using the conduit.

ADOT is six months into a $106 million project to eliminate delays that can occur for passenger and truck traffic on the main route between Las Vegas and Arizona. The free-flowing interchange will carry traffic northwest of the current connection.

A $27.5 million federal grant will advance the ADOT’s plans to upgrade two I-40 traffic interchanges providing vital connections with the Navajo Nation capital of Window Rock and other northeastern Arizona locations.

The Arizona Department of Transportation will begin work in early December along Interstate 40 to construct a new interchange that will in turn connect with a new roadway serving the east Kingman area.

Work is scheduled to get underway Thursday, July 11, on a free-flowing interchange connecting US 93 and Interstate 40 in Kingman.

The latest episode of our podcast, On the Road With ADOT, features Brad Burgess, program administrator in the ADOT Broadband Office. Please spend a few minutes listening to him chat with our host, Doug Nintzel, about how ADOT is helping bring broadband internet to rural Arizona. 

The Arizona Department of Transportation will begin a pavement and improvement project Monday, April 22, along Interstate 40 between Holbrook and the community of Chambers in northeastern Arizona. 

The State Transportation Board has awarded a $106 million project to build a free-flowing traffic interchange for Interstate 40 and US 93 in Kingman. It's designed to reduce congestion and enhance safety on the highly traveled route between Phoenix and Las Vegas.