After two months of work, Frederick County's newest roundabout is open for business.
The roundabout at Md. 180 and Mount Zion Road opened to traffic Tuesday afternoon, according to the State Highway Administration.
Officials had waited until June 20 to shut down the intersection until Frederick County Public Schools let out for the year.
The $3 million project was handled by Concrete General Inc., of Gaithersburg.
Some residents had questioned whether a roundabout was really needed at an informational meeting that SHA officials held with residents in Jefferson in February 2018.
Officials say the design substantially reduces the number of crashes, especially so-called angle crashes, which cause more injuries than sideswipes or rear-end crashes.
Statistics show 20 crashes at the intersection between 2012 and 2018, and eight police-reported crashes in 2018, according to SHA.
The intersection is used by about 4,000 vehicles per day.