Baltimore Outer Beltway

The Baltimore Outer Beltway is a proposed freeway that would encircle parts of the Greater Baltimore area. The route partially exists already as Maryland Route 100 (22.1 miles) in Anne Arundel and Howard Counties, as a segment of US-29 in Ellicott City (4 miles), and as Maryland Route 43 in White Marsh. Other parts of the route yet to be constructed would run through or near Randallstown, Owings Mills, Cockeysville, and Parkville