It continues in this direction for several miles meeting, and then running along the northeast boundary of the Tooele Army Depot.

[1][2][3] The route was designated on May 12, 1931, as the road from Tooele at SR-36 northwest to Grantsville at then SR-2 (now SR-138).

[2] Since that time, the route had undergone only a handful of minor legislative description changes until April 2009, when the eastern end was realigned.

The American Recovery and Reinvestment Act of 2009 provided funds for a new construction project on 1000 North in Tooele, which would provide an alternate route from SR-112 to 600 West.

As a result, this new construction from SR-112 to SR-36 (Main Street) was designated as part of SR-112, and the stretch of SR-112 from 1000 North southwesterly along Utah Avenue to Main Street was removed from the state highway system and returned to local jurisdiction.