The route begins at the interchange with I-84 just west of Mountain Green in Morgan County, and travels east for about 1.5 miles (2.4 km), roughly parallel to I-84.

At this point, the route makes a turn to the north, becoming Trappers Loop Road, which begins to climb into the mountains separating Weber Canyon and the Ogden Valley.

From here, the route winds its way back downhill, to the north, making its way towards the Ogden Valley area.

Based on the preliminary studies prior to construction, it was decided that the new route alignment would be located one-half to one mile (0.80 to 1.61 km) west of the old road.

In 1990, the route was extended from its southern terminus, westward to the eastbound Mountain Green Interchange off-ramp on I-84.