Bunker-like structures in Kingman are actually tunnels for I-40/US 93 project

The project to build a freeway-to-freeway connection between I-40 and US 93 in Kingman features all the usual elements of a big interchange: new travel lanes, bridges, flyover ramps and two absolutely massive concrete bunkers.

Wait, concrete bunkers?

While that might appear to be what’s risen from the ground along US 93 north of Kingman, the large structures are actually future tunnels that will be buried as work progresses. The tunnels, just east of US 93, will carry traffic underneath a mile-long roadway that will connect I-40 with US 93.

The first structure is already carrying traffic to little notice, as it handles a low volume of local traffic on Fort Beale Drive.

The second tunnel sits closer to US 93 and will gain more attention when it opens in late 2026, as it will serve northbound Beale Street traffic from downtown Kingman to US 93. 

The pair of tunnels are just two of many features of the $106 million project to reduce delays on the main route between Las Vegas and Arizona. The project will allow traffic to flow freely between I-40 and US 93 instead of stopping for a traffic signal on Beale Street at I-40. 

Construction is expected to continue into 2027, when the more visible elements of the project will come into play. That includes one mile of new highway between I-40 and US 93, five new bridges, two bridge widenings, four bridge rehabilitations and two miles of sound walls. 

For more information on the Kingman interchange project and to subscribe for updates, please visit azdot.gov/WestKingmanTI.