| State: | UT |
| Type: | SR |
| Route: | 174 |
| Section: | 123 |
| Map Custom: | yes |
| Map Notes: | SR 174 highlighted in red |
| Length Mi: | 8.122 |
| Length Round: | 3 |
| Length Ref: | [1] |
| Established: | 1985[2] |
| Counties: | Millard |
| Direction A: | West |
| Terminus A: | Main gate of Intermountain Power Plant |
| Direction B: | East |
| Terminus B: | south of Lynndyl |
| Previous Type: | SR |
| Previous Route: | 173 |
| Next Type: | SR |
| Next Route: | 175 |
State Route 174 (SR-174) is a state highway in the U.S. state of Utah. Spanning 8.1miles in rural Millard County, it connects the Intermountain Power Plant with U.S. Route 6 south of Lynndyl.
Starting at the main gate of the Intermountain Power Plant in rural Millard County, State Route 174 travels straight in a west-southwest direction for about 8miles along Brush Wellman Road through the Sevier Desert before ending at its intersection with U.S. Route 6.[1]
The Utah State Legislature established State Route 174 in 1985, along its current alignment.[2] This coincided with the construction of the Intermountain Power Plant, which commenced in 1981, and began commercial operation in 1986.[3] Before 1969, this was part of the much longer Utah State Route 215.
The entire route is in rural Millard County, Utah.