| State: | UT |
| Type: | SR |
| Route: | 46 |
| Section: | 110 |
| Map Custom: | yes |
| Length Mi: | 21.6124 |
| Length Round: | 4 |
| Length Ref: | [1] |
| Direction A: | West |
| Direction B: | East |
| Previous Type: | SR |
| Previous Route: | 45 |
| Next Type: | SR |
| Next Route: | 48 |
State Route 46 (SR-46) is a 21.6124miles state highway in northern San Juan County, Utah, United States, that connects U.S. Route 191 (US 191) at La Sal Junction (west of La Sal) with Colorado State Highway 90 (CO 90) om Colorado (west of Bedrock). It is the only major roadway that connect with the Colorado between Interstate 70 / U.S. Route 6 / U.S. Route 50 (I-70 / US 6 / US 50) on north and U.S. Route 491 on south.
SR-46 begins at La Sal Junction, a T intersection with US 191 about 22miles south of Moab in northeastern San Juan County, Utah. (US 191 heads north from the junction toward Moab and I-70 / US 6 / US 50. US 191 heads south toward Monticello and Blanding.) From its western terminus SR-46 heads easterly for about 2.2miles before entering the census-designated place (CDP) of La Sal. Approximately 9.3miles later SR-46 leaves the CDP and passes through roughly 1.74miles of the Manti-La Sal National Forest. Just before leaving the National Forest, SR-46 enters the unincorporated community of Old La Sal. About 5miles farther east, SR-46 leave Old La Sal and about 3.3miles later it reaches it eastern terminus at the Colorado State line. (The roadway continues east as Colorado State Highway 90 toward Bedrock and Naturita.)
The road from Utah State Route 9 (1910-1977)|State Route 9 (then also U.S. Route 450 (US 450), now US 191) at La Sal Junction east to Colorado was added to the state highway system in 1915,[2] and in 1927 the state legislature numbered it SR-4.[3] In 1939 US 450 was added to U.S. Route 160, which in turn was added to U.S. Route 163 (US 163) in 1970. In 1981, the northern end of US 163 was added US 191.