This project provides for the replacement of the existing Brookville Road Bridge over CSX Railroad. The existing Brookville Road Bridge, built in 1976, is a 123'-6" long, three-span, four steel rigid frame concrete deck structure carrying a 50-foot clear roadway with one 19'-6" lane in each direction and one 11' center-left-turn lane, plus a 7' concrete sidewalk and a one-foot concrete parapet with anti-climb chain link on both sides, for a total out-to-out bridge width of 66'. The structure is supported by two concrete abutments and eight concrete pier pedestals. The proposed bridge will be a single-span bridge up to 130 feet long. The proposed bridge will have a 41' clear roadway with two 11' lanes, one 7' striped median and two 6' shoulders, plus a 9' concrete sidewalk on the north side and a 14' concrete shared use path on the south side and a 1'-2 1/4" concrete parapet with anti-climb chain link on both sides, for a total out-to-out bridge width of 66'-4 1/2". New abutments will be constructed for the new bridge and the existing slope protection at the abutments will be removed per CSX requirements. A 14' asphalt shared use path on the south side and a 1'-2 1/4" concrete barrier with moment slab on both sides will be constructed along the approaches between Talbot Avenue and Warren Street. Approximately 875' of asphalt approach roadway will be repaved to transition the bridge to the existing roadway.

The roadway Average Daily Traffic (ADT) is approximately 11,750 vehicles per day.

The design of the project is scheduled to be completed in FY28. The construction is scheduled to start in FY28 and be completed in FY30. Schedule slippage due to State Highway Administration (SHA) recommendation for a complete replacement instead of a deck replacement and rehabilitation.

Cost increase due to scope change to reflect complete bridge replacement instead of rehabilitation.

The 2021 inspection revealed spalls and cracks at the concrete deck, abutments and slope protections, and pack rust, corrosion and delamination at the steel frames and bearings. The 2022 corrosion and chloride testing revealed high chlorides within the top 2" of the deck. This bridge is not considered structurally deficient. The proposed bridge replacement will eliminate a fracture critical bridge over CSX, move bridge supports away from the railroad tracks (which are not currently protected by crashwalls), enhance the safety of the public, and reduce future maintenance costs. The 2017 Greater Lyttonsville Sector Plan designates Brookville Road from Lyttonsville Place to Warren Street as a minor arterial road (MA-3). The 2018 Montgomery County Bicycle Master Plan proposes a sidepath on the south side.

The Brookville Road Bridge is listed in the Maryland Inventory of Historic Properties (MIHP) as No. M: 36-31 and is not eligible for the National Register of Historic Places. The reconstruction of the deck will be implemented in two phases and traffic will be maintained through construction. Temporary construction easements within adjacent properties are required for accessing the CSX Transportation right-of-way underneath the bridge. Streetlights, crosswalks, sidewalk ramps, bikeways, and other pertinent issues are being considered in the design of the project to ensure pedestrian safety.

The construction and construction management costs are eligible for up to 80 percent Federal Aid. The design costs are covered in the Bridge Design Project (CIP No. 509132).

A pedestrian impact analysis has been completed for this project.

Federal Highway Administration - Federal Aid Bridge Replacement and Rehabilitation Program, Maryland Department of Transportation, State Highway Administration, Maryland Department of the Environment, Maryland Historical Trust, Maryland-National Capital Park and Planning Commission, Montgomery County Department of Permitting Services, CSX Transportation, Utilities, and Bridge Design Project (CIP 509132)