anchor Description
This project provides for the replacement of the existing Dennis Avenue Bridge over a tributary to Sligo Creek. The existing bridge, built in is a single span structure composed of prestressed concrete voided slab beams carrying a roadway, two shoulders, and two sidewalks. The proposed replacement bridge will be a overall span three-cell precast concrete arch culvert carrying a roadway, two bicycle compatible shoulders, two striped buffers, a shared-use path on the north side and a sidewalk on the south side, for a total clear bridge width of The project includes utility relocations and approach roadway work at each end of the bridge as necessary to tie into the existing roadway and sidewalks. The bridge will be closed to traffic during construction. Accelerated bridge construction techniques will be utilized to minimize the disruption to the traveling public and local community.
anchorCapacity
The roadway Average Daily Traffic (ADT) is approximately vehicles per day.
anchorEstimated Schedule
The design of the project was completed in the summer of Land acquisition will be complete in The construction is scheduled to start in the spring of and be completed in the fall of The bridge will be closed to traffic during the school summer break of
anchor Justification
The proposed replacement work will mitigate the frequent flooding of five residential properties and local streets upstream of the bridge; mitigate occasional roadway flooding on Dennis Avenue that causes significant traffic delays; and eliminate annual maintenance repairs required for this deteriorating structure. The existing bridge is rapidly deteriorating and is nearing the end of its estimated service life.
anchorOther
The December Technical Update to the Master Plan of Highways and Transitways designates Dennis Avenue as Minor Arterial Road with a minimum right-of-way of The December Montgomery County Bicycle Master Plan recommends a sidepath (shared use path) on the north side. Streetlights, crosswalks, sidewalk ramps, bikeways, and other pertinent issues are being considered in the design of the project to ensure pedestrian safety. The funding shown as "Intergovernmental" is from WSSC for its share of the project cost.
anchorFiscal Note
In this project received transfers totaling from Davis Mill Road Emergency Stabilization Montrose Parkway East and Platt Ridge Drive Extended Funding switch in of from General Obligation Bonds to recognize Federal Aid contribution.
anchorDisclosures
A pedestrian impact analysis has been completed for this project.
anchorCoordination
Federal Highway Administration - Federal Aid Bridge Replacement/Rehabilitation Program, Maryland State Highway Administration, Maryland Department of the Environment, Montgomery County Department of Environmental Protection, Montgomery County Department of Permitting Services, Montgomery County Public Schools, Montgomery County Department of Police, Montgomery County Fire and Rescue Service, Montgomery County Ride On, Maryland-National Capital Park and Planning Commission, Utilities, and Wheaton Regional Dam Flooding Mitigation (CIP Project