Project Location: Town of Elmore in Lamoille County on VT Route 12 over unnamed brook. The bridge is located approximately 5.6 miles south of the junction with VT Route 15A.

The Elmore Bridge 94 project includes the replacement of the existing Aluminum Coated Corrugated Galvanized Metal Plate Pipe (ACCGMPP). The existing culvert was built in 1959 and has a span of 6-feet and is 74 feet long.  There is an average of 10 feet of fill over the culvert. The structure currently has a culvert rating of 5 (Fair), and a channel rating of 4 (Poor). While the culvert is in fair condition, there are holes throughout the invert up to 2-inches in diameter.

VTrans evaluated alternatives for rehabilitation or replacement of the bridge in an engineering study completed in April 2020. This study assessed the proposed design criteria for the structure, right-of-way, rare/threatened/endangered species impacts, hydraulics, and archaeological resource impacts. Several alternatives were considered, including: no action, invert repair, culvert liner, replacement with a new culvert, and replacement with a bridge. An offsite detour, phased construction, and a temporary bridge were evaluated as potential maintenance of traffic options.

Given the age of the structure, substandard hydraulics, site constraints and current conditions, the engineering study recommended a full bridge replacement with a new precast box or 3-sided frame while maintaining traffic with phased construction.