Drivers on Frederick's Md. 180 bridge over U.S. 15 have likely noticed some increased activity in the area, as State Highway Administration crews prepare to begin a project to add capacity on the busy road.
The $17 million project will widen Md. 180 from west of Swallowtail Drive to Solarex Drive, as well as build a second two-lane bridge over U.S. 15 near Butterfly Lane. It will also add bicycle and pedestrian routes over the bridge and throughout the project area, and a new left-turn lane at Solarex Court.
The project is expected to be finished in the summer of 2021, SHA spokeswoman Shantee Felix said in an email Monday.
Much of the work on Md. 180 will take place behind concrete barriers, Felix said, but there will be some off-peak closings of single lanes with flagging crews between 9 a.m. and 3 p.m.
There will also be nighttime closings on U.S. 15 as crews build the second bridge.
The existing bridge was named in 2016 for Marine Sgt. David James Smith, who died in Germany from injuries suffered in a suicide bombing in Afghanistan in January 2010.
The section of Md. 180 where the work is being done is used by about 22,000 vehicles per day, according to SHA.
In 2017, work was finished on a project to widen Md. 180 near Solarex Court.
That project added a 5-foot-wide paved bicycle and pedestrian path along westbound Md. 180 between Solarex Court and Ballenger Center Drive.