AZ HB2601

Requires the Arizona Department of Transportation to formally request federal highway administration approval to segment the Interstate 11 project between the Arizona-Nevada border and Casa Grande within 14 days of the law's effective date

Mandates the department conduct any required tier 2 environmental and engineering studies within three months of receiving federal approval for segmentation

Addresses a 2022 federal lawsuit challenging the tier 1 environmental impact statement that has frozen progress on the entire Interstate 11 corridor statewide

Allows advancement of the northern corridor section separately from contested southern portions, which the legislature finds is environmentally distinct and does not raise the same protected-resource concerns

Declares Interstate 11 critical to Arizona's economic future for improving freight movement, supporting regional growth, and enhancing safety