W. Bonneville and 200 S. UP Ave

The first floor of the Oregon Short Line passenger depot is constructed of dressed grey ashlar; the remainder is of red brick. Three massive round arches mark the street-side entrance; the brick over the arches is laid in a decorative herringbone pattern. Unaltered on the exterior, the depot also retains a great deal of its early interior design. In addition to housing the passenger depot, the building contained the offices of the Montana and Idaho divisions of the Oregon Short Line. U.S. President William Howard Taft attended the station's dedication, held on August 20, 1915.