The D.C. Department of Transportation said it will begin work on the Anacostia Freeway bridge rehab project by the end of February, potentially leading to lane closures and detours in the area.

DDOT said work on the initial part of the six-phase project could start as soon as Feb. 20. This first phase of work willand will involve taking out a 32-median on the bridge so traffic can shift lanes during the roadwork.

The project, which DDOT said will take an estimated 375 days, involves the rehabilitation of the bridge and ramps over Nicholson St. SE.

The second and third phases of the project will involve the demolition and reconstruction of the north and south ends of the bridge. Later, work crews will re-install the bridge median, then demolish and reconstruct the ramps.

In addition to reconstructing the bridge and ramps, crews will perform sidewalk maintenance and build a covered walkway to allow for pedestrian access to the Fairlawn neighborhood and the waterfront. This work could lead to temporary and occasional lane closures on Nicholson Street.

The American Road and Transportation Builders Association said there were eight bridges in the District marked “structurally deficient.” This list included the bridge over Nicholson Street as well as one of the bridge ramps being reconstructed. The Anacostia Freeway Bridge over Nicholson Street gets 58,000 crossings a day, ARTBA said.