Columbia Engineering OBBR17 LE Boardwalk Structural Drawings 9.4.25.pdf

This is a structural drawings document prepared by Columbia Engineering for the Lake Elkhorn East Inlet Boardwalk Replacement project administered by the Columbia Association in Maryland. The project encompasses the replacement of a boardwalk structure at Lake Elkhorn's East Inlet, with construction anticipated to occur between January 4, 2027 and April 2, 2027, subject to adjustment based on contract execution and issuance of the Notice to Proceed. The Little Patuxent River stream tributary feeding Lake Elkhorn is classified by the State of Maryland as Nontidal Stream Use Class IV Recreational Trout Waters, making environmental compliance critical to project execution.

The project is subject to Maryland Department of the Environment (MDE) Time-of-Year-Restrictions that prohibit construction activities affecting aquatic habitats in the tributary from March 1 through May 31. Consequently, all in-stream work must be completed by February 28, 2027, establishing a firm deadline for aquatic-related construction activities. The structural drawings document serves as the technical specification for the boardwalk replacement, detailing design requirements and construction specifications necessary for bidders to develop competitive proposals and for contractors to execute the work within the established environmental compliance window.