Named for its sawmills, Mill Fork was important in the development of the railroad through the canyon.

The Utah and Pleasant Valley Railroad, a predecessor of the Denver and Rio Grande Western, was building through Spanish Fork Canyon in 1875–1879.

[3] A large water tower and a small reservoir were constructed in 1888,[4] soon to be joined by a general store and housing for railroad employees.

[3] Another use for the area's abundant timber came with the creation of an extensive charcoal business in the canyon; many Mill Fork residents were employed in cutting the wood or working the kilns.

No longer needed as a water stop, and with its helper engine obsolete, the Mill Fork railway station was closed down in 1947.