Arkansas Highway 74 is a series of state highways of 103.73 miles (166.94 km) total in Northwest and north central Arkansas and is divided into eight separate sections.

Arkansas Highway 170 is a designation for two state highways in Washington County, Arkansas. The main segment of 17.31 miles (27.86 km) runs from Devil's Den State Park to West Fork. A shorter segment of 5.44 miles (8.75 km) runs from U.S. Route 62 (US 62) through Appleby before reconnecting with US 62.