anchor Description
This project provides for the replacement of the existing Brink Road Bridge over Great Seneca Creek. The existing bridge, built in is a one span steel beam with an asphalt filled corrugated metal deck structure carrying a clear roadway with W-beam guardrail on each side. The proposed replacement bridge includes a one span prestressed NEXT beam structure with a clear roadway width. The project includes of approach roadway work west of the bridge to reduce flooding frequency and improvements to the intersection with Wightman Road approximately feet east of the bridge. In addition, the Maryland-National Capital Park and Planning Commission (M-NCPPC) Seneca Creek Green hiker-biker trail crossing will be improved at the intersection. The new bridge will carry two lanes of traffic with two travel lanes and wide shoulders for a clear roadway width of A traffic signal will be constructed at the intersection of Wightman Road and Brink Road. To meet Program Open Space (POS) land conversion requirements land needs to be purchased at the corner of Wightman Road and Brink Road and a parking lot constructed for trail users.
anchorCapacity
The roadway Average Daily Traffic (ADT) is approximately vehicles and the roadway capacity will not change as a result of this project.
anchorEstimated Schedule
Design is expected to be completed in summer Site improvements and utility work will begin in Construction is scheduled to begin in summer and be completed in the winter of The bridge will be closed to traffic from June to August
anchorCost Change
Costs increase due to rising construction costs caused by material and labor shortages, as well as scope increase to include a parking lot for trail users as required by the Program Open Space (POS) land conversion law and the need for a traffic signal at the intersection of Brink Road and Wightman Road.
anchor Justification
The proposed replacement work is necessary to provide a safe roadway condition for the traveling public. The bridge inspection report for Bridge No. indicates that the bridge steel beams are in poor condition with areas of percent section loss. As a result, the bridge is inspected on a frequency. The bridge is functionally obsolete with a clear roadway width of and carries approximately vehicles per day. The bridge is closed two to three times a year due to flooding of the Great Seneca Creek. The project will reduce the flooding frequency to once every five years.
anchorFiscal Note
The costs of bridge construction and construction management for this project are eligible for up to percent Federal Aid. The design costs for this project are covered in the Bridge Design project (CIP No.
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, Maryland-National Capital Park and Planning Commission, Montgomery County Department of Permitting Services, Utilities, and Bridge Design Project (CIP