The North Dakota Department of Transportation (NDDOT) has installed two fixed automated spray technology (FAST) systems. One system is installed at the Interstate 29 (I-29) Buxton Bridge (near Buxton, ND), while the second installation is at the Interstate 94 (I-94) Red River Bridge between Fargo, ND, and Moorhead, MN.
This study evaluates the two existing FAST systems, which will assist in determining if additional systems are feasible. This study has three main objectives: 1) describe how the FAST systems work; 2) document how the current NDDOT FAST systems perform related to treating the bridge decks, and 3) analyze the benefits and costs of the systems.
The two ND FAST system installations appear to be working as intended based on feedback from NDDOT – Fargo District staff and the results from the benefit-cost analyses. Several factors contribute to these successful systems, such as selecting appropriate locations for FAST systems (primarily based on winter crash data); and having knowledgeable and dedicated staff for assisting in the design and implementation of the system, monitoring its operation, and performing the required maintenance procedures.