29th Street Bridge Water Main
The National Park Service will issue a special use permit to DCWASA regarding proposed work in Georgetown. DCWASA approached the park with a request to install temporary bracing to support a water main that spans the C&O Canal at the 29th Street Bridge. The water main is on the east side of the bridge. The additional bracing is needed as the existing supports on the bridge are deteriorating. There is a concern that adequate support for the water main has been compromised. The new bracing will supply support to the water main near each bridge abutment.
Two footings will be constructed. A vertical brace will be anchored into each footing. The braces will "cradle" the pipe. Ground disturbance to establish a footings for the two support brackets will not exceed 4 cubic feet (24"x24"x12") per footing. The area designated for each footing is disturbed soil. A bond break will be installed to prevent any damage to historic masonry from the concrete footings during installation. This project will be undertaking Winter 2007.
The 29th Street Bridge is slated for major work within the next few years. Permanent bracing will be incorporated into the bridge design and the temporary bracing will be removed.
The park's Interdisciplinary Team reviewed the project for impacts to natural and cultural resources. The project does not pose any serious or long-term effects to the environmental, historical, cultural, archeological, or visual resources. It meets categorical exclusion #C.3 – Routine maintenance and repairs to non-historic structures, facilities, utilities, grounds, and trails.
For further information about this project, please contact Park Exhibit Specialist, at 1850 Dual Highway, Suite 100, Hagerstown, MD 21740.