Montana Department of Transportation

Malcolm “Mack” Long, Director


View the Governor’s Coronavirus Task Force site for more information.

Public Involvement

MT 21 Bridges (Simms – Augusta)

MT-21 Bridges project logo

MT-21 Elk Creek – Hogan Bridges


MP 0.1 (Elk Creek), MP 0.2 (Elk Creek Overflow) and MP 0.7 (Hogan Slough) (Detours or temporary closures will be determined at a later date.)


Floodplain modeling and the preliminary hydraulics report have been completed. The main Elk Creek Bridge and the Elk Creek Overflow (currently 3 culverts) will be replaced with new two-span concrete bridges. Final recommendations for bridge size are expected soon and the road alignment and bridge locations will be set.