Department of Conservation and Recreation (DCR) Franklin, MA
Design and Permitting Services for the Southern New England Trunkline Trail
BSC was selected to provide permitting, design, and survey services for the construction of a concrete culvert rail-trail tunnel. The culvert provides a connection for the Southern New England Trunkline Trail, a 10-mile trail system facility that includes a 10-foot wide, shared-use path along an abandoned railroad right-of-way.
BSC prepared conceptual design scenarios and selected a four-sided precast box culvert. Wingwalls were designed at the ends of the culvert to reduce the total length of culvert and minimize the length of the trail passing through the enclosed tunnel. The trail surface was stabilized using granular pavement, commonly referred to as stone dust. Wetland scientists also worked to delineate jurisdictional wetland resource areas directly adjacent to the project area in accordance with the Wetland Protect Act and the Franklin Conservation Commission Wetlands Protection Bylaw.