| State: | WY |
| Type: | WY |
| Route: | 319 |
| Alternate Name: | Old Yellowstone Highway |
| Map Custom: | yes |
| Map Notes: | WYO 319 in red, WYO 319 Spur in blue |
| Length Mi: | 28.75 |
| Length Round: | 2 |
| Length Ref: | [1] |
| Direction A: | South |
| Terminus A: | north of Wheatland |
| Direction B: | North |
| Counties: | Platte, Converse |
| Previous Type: | WY |
| Previous Route: | 318 |
| Next Type: | WY |
| Next Route: | 320 |
Wyoming Highway 319 (WYO 319) is a 28.75-longNaN-long north-south state highway in Platte and Converse counties.
WYO 319 is a north–south highway that follows the old Yellowstone Highway, therefore the current highway is named Old Yellowstone Highway. WYO 319 begins at an interchange with Interstate 25/U.S. Route 26/U.S. Route 87 (I-25/US 26/US 87; exit 100) and from there heads northeast then north towards Glendo. At 6.21miles, WYO 319 has an intersection with a local road which heads west to exit 104 off I-25/US 26/US 87. Still heading north, WYO 319 enters Glendo from the south, intersecting A Street at 14.16miles. A Street is designated as WYO 319 Spur for 0.2miles between WYO 319 and I-25/US 26/US 87 (exit 111). As WYO 319 leaves Glendo, at 15.4miles, there is a road named Lake Shore Road that travels east of WYO 319 and allows access to Glendo State Park, one of Wyoming's most popular boating parks.[2] WYO 319 heads northwest and parallels I-25/US 26/US 87 that lies to the west and the Glendo Reservoir/North Platte River that lies to the east. I-25/US 26/US 87 breaks its parallel and leaves to head more northwest towards Douglas, while WYO 319 turns north to come to an end at US 18/US 20 in Orin at 28.84miles.[3]
WYO 319 is the original alignment of Old US 185 between 1926 and 1936[4] and US 87 (Yellowstone Highway) from 1936 until I-25 was completed (between 1956 and the 1980s) and therefore routed along it.[5]
| State: | WY |
| Type: | WY-Spur |
| Route: | 319 |
| Location: | Glendo |
| Length Mi: | 0.20 |
| Length Round: | 2 |
Wyoming Highway 319 Spur (WYO 319 Spur) is an unsigned 0.21NaN1 long spur route of WYO 319 in Glendo. WYO 319 Spur travels from WYO 319 west to I-25/US 26/US 87 (exit 111) at the Glendo Interchange.