Known as Ridgely Avenue, the highway runs 1.14 miles (1.83 km) from MD 435 in Annapolis north to the end of state maintenance in Parole in Anne Arundel County.

The highway heads northwest as a two-lane undivided street through the West Annapolis neighborhood.

[1][2] What is now Ridgely Avenue was laid out by West Annapolis developer George T. Melvin in 1889, and a wooden swing bridge across Weems Creek was constructed shortly thereafter.

[6] The wooden bridge across Weems Creek was also replaced with a more modern concrete structure at that time.

[11][12] The state highway's current swing bridge across Weems Creek was completed in 1997,[13] replacing the structure built in 1929.