Cromwell Bridge Road, which is exit 29 off the Baltimore Beltway in a set of ramps shared with Loch Raven Boulevard, is mostly undeveloped.

A short section of the route between Providence Road and about a block past the beltway is filled with commercial development including office buildings, hotels, a park-and-ride lot that serves as the main northern terminus for Maryland Transit Administration bus route 3 and 104 and its two major landmarks: Loch Raven High School and Rock City Church.

The remainder of the road, which has few intersections, is designated as Maryland's "Horses and Hounds" scenic byway, mostly lined with trees, except for a portion where the Loch Raven Reservoir is visible.

That part of Cromwell Bridge Road between present-day Satyr Hill and Glen Arm/Cub Hill Road was once part of the original Old Harford Road when the latter was the main route of choice between parts of southern Harford County and the port of Baltimore.

[2] After complaints from area residents over how this would impact on the road's status as a scenic byway, BGE agreed to temporarily halt cutting down these trees.