I-40/US 93 West Kingman Traffic Interchange

The Arizona Department of Transportation has initiated design work on a new traffic interchange that will improve traffic flow at the junction of Interstate 40 and US 93 in west Kingman. 

Phase I is currently in the design phase, with construction expected to begin in 2024 and finish in 2026.

Design and Construction Timeline

ADOT does not have the funds to build all the improvements of a full system interchange at one time. Thus, the project will be constructed in two phases, with the ramps between Phoenix and Las Vegas constructed first. Phase II will construct the ramps between Las Vegas and California, when traffic demands warrant the improvements are needed and when available funding can be programmed.

Kingman TI Alternative Map


ADOT has monitored the increasing traffic growth and congestion in west Kingman that has occurred over the years. The traffic volume is more than the current diamond interchange is designed to accommodate. 

 In 2007, a feasibility study was initiated, and alternatives for a new system traffic interchange were identified. The proposed traffic interchange design includes a free-flowing connection between the two freeways without stopping at the ramp intersection. 

The new traffic interchange is being designed to accommodate both current and projected traffic volumes for this area for the next 25 years. The Final Feasibility Report was completed, which identified a preferred improvement corridor.

In 2009, the preferred improvement corridor was further refined into a series of specific alignment alternatives. These alternatives were shared with the public and agency stakeholders where a most favorable alternative was developed. This information was completed and summarized in a Design Concept Report (DCR) in 2015.

The Final Environmental Assessment (FEA) was completed in July 2020.

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