A full closure to all uses including vehicles, pedestrians, and cyclists will be in place between milepost 248.1 and 249.3. A signed detour will direct travelers around the closure between milepost 248.1 and 258.7, routing park visitors around the project site. Both lanes at the project site, from Milepost 248.1 to 249.3, will be closed to all activity (cars, bicycles, and hikers) to ensure the safety of Parkway visitors and staff. Access to the Parkway between milepost 258.7 and 249.3 will remain available.
The historic bridge is approaching the end of its lifecycle. It was constructed in 1939 and is 546-feet long and 28-feet wide. It is a five-span bridge with a steel girder and concrete floor beam structure supported by concrete and stone masonry abutments which are set in the steep slope of a ravine, and concrete piers which are cast onto a wide concrete footing.
Funding for this project comes from the Great American Outdoors Act (GAOA) National Parks and Public Lands Legacy Restoration Fund. GAOA is part of a concerted effort to address the extensive maintenance backlog in national parks. Supported by revenue from energy development, the fund provides up to $1.3 billion per year for five years to make significant enhancements in national parks to ensure their preservation and provide opportunities for recreation, education, and enjoyment for current and future visitors.
The original article can be found at: Road & Bridge