Montana Reinvestment Act
US 2 - Swamp Creek
This project includes reconstruction and realignment of the Swamp Creek channel. The original Swamp Creek has been impacted by the current location of US 2, irrigation practices, rural development and flood control measures. Incorporating this natural channel design aims to restore Swamp Creek's potential capacity to transport flows, sediment, and enhance fish habitat.
The challenges faced are existing deep deposits of extremely soft, saturated peat swamp materials that must be traversed. These deposits, which are in excess of 40 feet in depth, must be crossed by the project with nearly no intermediate transition zone between very steep rock/soil slopes and the swampy areas. These geological challenges require looking at other construction technologies such as: lightweight fill, lightweight equipment, very high strength geosynthetics, and/or staged construction.