- Western Terminus:
- Rolling Road in Woodlawn
- Eastern Terminus:
- I-70 and Cooks Lane at the Baltimore city line
- 2.96 miles
Security Boulevard is a short east/west route near the Baltimore city line. It begins at Rolling Road in Woodlawn and runs east, passing through an interchange with the Baltimore Beltway (I-70). After a short distance, it curves to the south. There an interchange with I-70 at its eastern terminus at the Baltimore city line. MD 122 ends, and Security Boulevard changes names to become Cooks Lane. Security Boulevard derives its name from Social Security, which has an office along the route.