Lime Creek U is a short, moderately difficult spur off of Lime Creek. The trail has small patches of loose rock, a very tight section hugged on both sides by large pine trees, and a muddy, slightly off-camber portion. 4WD is necessary to make it through without sliding off trail or into the trees. This trail does not appear to be a dead end. However, Trails Offroad can not confirm if the through trail to Lime Creek A is legal. Thus, the guide ends where USFS MVUM terminates the trail. There is no camping along this trail.