This project provides for the replacement of a structural plate pipe arch (including stone traffic barriers and wingwalls) that was constructed in 1940. The existing skewed arch has a 5'-0" rise and 20'-1" span (along centerline of roadway) and conveys a tributary of Rock Creek. The Centerline Elmhirst Parkway is skewed at about 51 degrees from centerline of tributary. Due to the poor condition and structural deficiency of the bridge structure, the Montgomery County Department of Transportation is planning to replace the Elmhirst Parkway Bridge by closing the road and detouring traffic. Elmhirst Parkway carries 2-way traffic on a 19’-0” paved roadway width with 10’-0” grass shoulders on each side of roadway. The proposed replacement closes Elmhirst Parkway with a detour for the entire construction duration.The project site is located approximately 300 feet north of Cedar Lane and just south of the intersection with Elmhirst Drive, within Rock Creek Park. The M-NCPPC Elmhirst Parkway hiker/biker trail is located approximately 30’ south of the bridge. Elmhirst Parkway is an Urban-Local roadway with average daily traffic of 600 vehicles per day, counted in 2011.
Rustler Construction, Inc. will be the contractor for this project.
Montgomery County Department of Transportation
Division of Transportation Engineering
100 Edison Park Drive, 4th Floor
Gaithersburg, Maryland 20878
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