SH-44 travels through the Treasure Valley from Interstate 84 (I-84) to U.S. Route 20 (US-20) and US-26 in Garden City, Idaho.

State Highway 44 starts at the junction of Interstate 84 north of Caldwell at Exit 25.

The highway turns southward onto Glenwood Street in Garden City where it continues for approximately 1.3 miles (2.1 km) before ending at Chinden Boulevard (US-20/US-26).

The highway turned south onto 23rd Street and continued several blocks to Fairview Avenue which, at the time, was also US-20, US-26 and US-30.

[3] A study is currently being conducted by ITD and Compass (the Boise area MPO) to determine the future transportation needs of this facility and to preserve the right of way for possible future widening of the highway and bypass alternatives through the cities of Middleton and Star.