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

The award through the Federal Highway Administration’s Bridge Investment Program will help ADOT replace four bridges that currently make up the interchanges at Navajo Nation Route 12 (Window Rock) at milepost 357 and Grant Road (Lupton) at milepost 359. Those bridges don’t meet current design standards.

The project, with a current estimated cost of $48.6 million, will comprehensively upgrade the two interchanges by improving traffic flow on the crossroads, enhancing pedestrian safety, removing the threat of seasonal flooding and raising vertical clearance. 

“Upgrading these interchanges that are so critical to those living in and traveling through the Navajo Nation will help safely connect Arizonans and empower our state’s economy,” ADOT Director Jennifer Toth said. 

ADOT’s grant proposal received support from state and federal elected leaders, local governments and Navajo Nation officials.

“Together, we will elevate the vertical connections within our landscapes, embodying the unwavering spirit of the Navajo Nation – a spirit rooted in connectivity, progress and a shared future,” the Navajo Department of Transportation said as part of a statement on the award.

The grant requires a $6.8 million state match, and other funding will come from ADOT’s Bridge Subprogram. The project is tentatively scheduled for fiscal 2027.

KINGMAN – 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.

The Rancho Santa Fe Parkway interchange will be about 4 miles east of the existing historic Route 66 interchange (Andy Devine Avenue) and provide access to the growing area surrounding the Kingman Airport.

The $44 million project is expected to take 1.5 years and is being undertaken in partnership with the city of Kingman, which will separately construct the new Rancho Santa Fe Parkway north of I-40 connecting to the Kingman Airport. 

The project will include:

• Constructing two new bridges on I-40 at the new Rancho Sante Fe Parkway interchange
• Widening the existing bridges over Rattlesnake Wash
• Installing new sidewalks and curb and gutter
• Constructing pipe culverts, concrete box culverts and storm drainage
• Installing new traffic signals and lighting
• Installing new fencing, guardrail, signage and pavement markings

During construction, motorists should expect construction to occur days and nights Monday through Thursdays, with work only occurring during daytime hours on Fridays. While ADOT will maintain two lanes of travel in each direction on I-40 throughout the project, drivers should anticipate delays of up to 20 minutes during certain activities.

To sign up for project-related traffic alerts and updates sent directly to your email inbox, please visit  azdot.gov/I-40RanchoSantaFePkwayTI

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

The $106 million project is planned to eliminate delays that can occur for passenger and truck traffic on the main route between Las Vegas and Arizona. While traffic now must stop at a traffic signal where Beale Street intersects with I-40, a system-to-system interchange will feature ramps that allow traffic to flow freely.

Those new ramps will create one new mile of highway between I-40 and US 93, running northwest of the existing interchange at I-40 and Beale Street. Other project features include:

• Widening more than one mile of I-40 in both directions between the new interchange and Stockton Hill Road
• Adding a merge lane on US 93 northbound
• Widening and/or rehabilitating four bridges on I-40
• Building sound walls along a portion of I-40 to the west of Stockton Hill Road
• Constructing drainage features

For more information on the Kingman interchange project and to subscribe for updates, please visit azdot.gov/WestKingmanTI. Visitors to the webpage can also watch a flyover video simulation of what the project will look like upon completion.

This project is among several underway or planned to improve US 93, which travels 200 miles between Wickenburg and the Nevada line at Hoover Dam. In addition to constructing the Kingman interchange, ADOT's long-term vision calls for a four-lane divided highway through the entire 200 miles between Wickenburg and Nevada. Since 1999, ADOT has completed 19 projects to modernize US 93 between Wickenburg and I-40. 

A current US 93 project near Wickenburg is now more than halfway done as work continues to transform a 5-mile section of two-lane roadway into a four-lane divided highway. Work on the Wickenburg-area project is expected to continue through this year, with lane restrictions limited to overnight hours to minimize traffic impacts. More information is available at azdot.gov/US93Wickenburg. 

ADOT’s Five-Year Transportation Facilities Construction Program for 2025-2029 has these additional projects scheduled to convert segments US 93 to four-lane divided highway: mileposts 106-109.5. in the Cane Springs area; mileposts 190.5-193.5 in the Vista Royale area northwest of Wickenburg; and mileposts 161.7-166.2 in the area of Big Jim Wash.

For more information on other current and planned improvement projects in northwestern Arizona, please visit the Northwest Regional Improvements US 93 and I-40 webpage.   

HOLBROOK – 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. 

Crews will begin work on the Dead River Bridge (milepost 316) on April 22 to repair the bridge deck and replace the barrier wall. During the project, the eastbound Dead River Bridge will be closed and I-40 traffic will share the westbound bridge with one lane in each direction. Drivers should budget extra time as a result.

Drivers can also expect lane restrictions in both directions along I-40 between Pinta and McCarrell roads (milepost 319-331) when paving work begins on a pavement improvement project in May or June. 

Crews also will be working to replace the pavement and restripe 12 miles of I-40 in the area.

Drivers should allow extra travel time and be prepared to slow down, stay alert and merge safely when approaching and traveling through the work zones. 

For more information, please visit the project webpage.

Work on these projects is scheduled to be completed by fall 2025.

KINGMAN – The State Transportation Board has awarded a $106 million construction project to build a free-flowing traffic interchange for Interstate 40 and US 93 in Kingman.

With the contract awarded to Fisher Sand & Gravel Co. during the board’s meeting on Friday, March 15, construction is expected to begin this summer and take two and a half years.

The interchange in west Kingman is designed to reduce congestion on the highly traveled route between Phoenix and Las Vegas while improving safety, travel times and reliability. While vehicles now must stop at a traffic signal where Beale Street intersects with I-40, the system-to-system interchange will feature ramps that allow traffic to flow freely.

The interchange is designed to handle projected traffic growth for the next 25 years. 

For more information, please visit azdot.gov/WestKingmanTI.

PHOENIX – Both directions of Interstate 40 will be reduced to one lane between Seligman and Ash Fork during daylight hours Monday to Thursday starting Thursday, Aug. 3, and ending Thursday, Aug. 17, as an Arizona Department of Transportation project removes and replaces surface pavement. 

The lane restrictions, a 55 mph speed limit and a width restriction of 14.5 feet will be in place from 5 a.m. to 8 p.m. Monday through Thursday between mileposts 123 and 146. 

ADOT has committed $90.5 million to pavement repair projects, most of them in northern Arizona, after the record-setting winter. Governor Hobbs and the state Legislature also have allocated $54 million for additional pavement improvement projects in rural Arizona. A website at azdot.gov/PavingRepairs details these Statewide Critical Pavement Repair Projects.

Meanwhile, another ADOT project will reduce westbound I-40 to one lane from milepost 108 to milepost 86, between Seligman and US 93, from 4 a.m. to 4 p.m. starting Tuesday, Aug. 8, and ending Thursday, Aug. 11. Crews will be applying a sealant to extend the life of the pavement. The speed limit will be reduced to 55 mph in the work zone and there will be a width restriction of 14 feet. 

Motorists should slow down in work zones and give workers plenty of space.

HOLBROOK – The Arizona Department of Transportation will continue two improvement projects on Interstate 40 from Joseph City through Holbrook (mileposts 278-290) starting Monday, April 24.

Crews will be working on the bridge decks at the Tanner Wash Bridge and the Geronimo Road overpass, as part of a pavement improvement project along I-40 from Joseph City to Perkins Valley Road. 

For more information, visit the project webpage.

Additionally, crews will be striping the highway and installing traffic counters from Perkins Valley Road through Holbrook. For more information, please visit the project webpage.

Both projects are expected to be completed by early May.

Restrictions will be lifted each day after hours and on weekends. At least one lane of traffic will be open in each direction during paving operations. 

Drivers should allow extra travel time and be prepared to slow down, stay alert and merge safely when approaching and traveling through the work zones. 

KINGMAN – The Arizona Department of Transportation invites the public to join a virtual public meeting to learn more about the design of a new traffic interchange that will provide a free-flowing connection between Interstate 40 and US 93 in west Kingman.

The meeting is scheduled for 6 p.m. Wednesday, Jan. 25, which the public can join at https://bit.ly/wkingman. ADOT project members will present a video simulation of the new interchange design at the meeting and will then answer questions from the public.

The west Kingman interchange is a project designed to reduce congestion on the highly traveled route between Phoenix and Las Vegas. For those traveling between those two large metro areas, the new interchange is expected to improve safety, travel times and reliability with a seamless freeway connection between US 93 and I-40.

Construction on the $161 million interchange is scheduled to begin in 2024 and continue through 2026.

Those interested in joining the meeting can join the virtual public meeting in these ways:

Online: https://bit.ly/wkingman

Webinar password: Kingman 5464626 (from a smartphone)

Phone: 408.418.9388 

Access code: 2492 032 8593 

ADOT welcomes additional questions and comments for those who cannot attend the meeting by visiting our project page. Also, the virtual meeting will be recorded and posted on the project web page, azdot.gov/WestKingman