Arizona State Route 74

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State Route 74 (or SR-74) is a state highway in central Arizona that stretches east to west from its junction with U.S. Route 60 just south of Wickenburg to its junction with Interstate 17 north of Phoenix. It serves Lake Pleasant Regional Park and serves as a northern bypass around the often congested stretches of U.S. 60 through the northwest suburbs of the Phoenix Metropolitan area. From end to end, it is thirty-one miles long.

Stretches of the highway are known as the Morristown-New River Highway, Lake Pleasant Road, and Carefree Highway, the last of which actually extends several miles past the I-17 to Carefree. The I-17 to Carefree stretch of Carefree Highway is sometimes numbered as SR-74 on maps, but is not actually part of the state highway system.

Prior to 1932, SR-74 extended as far west as Ehrenberg; this stretch of highway was renumbered as part of U.S. 60.

The passage of a sales tax extension by voters in Maricopa County in 2004 provided significant funding for highway improvements throughout the region. The Arizona Department of Transportation will use a portion of that funding to acquire right-of-way along SR-74 for future improvements, but has no plans to upgrade the highway to a controlled access freeway through 2025.

ADOT is also in the planning stages for a bypass around Wickenburg. This bypass would effectively continue SR-74 beyond its current western terminus with US 60. Whether this bypass would be marked as SR-74 or not is undetermined.