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| Street | Route | Communities | Landmarks | Notes |
|---|---|---|---|---|
| Sacred Heart Lane | Butler Road to Walgrove Road | Reisterstown Glyndon |
||
| Security Boulevard | CMS complex west of Greengage Road to the city line (near Forest Park Avenue) where it continues as Cooks Lane | Woodlawn | Security Square Mall Social Security Administration headquarters |
Exit 17 off Baltimore Beltway and exit 94 off I-70. Continues as Cooks Lane in Baltimore City. Served by bus routes 15, 40, 44, 57, and 77. |
| Seminary Avenue | Falls Road to Providence Road | Lutherville | St. Paul's School | |
| Seven Mile Lane | Old Court Road to Reisterstown Road (continues as Colonial Road) | Pikesville | Pikesville Middle School Seven Mile Market Suburban Orthodox Synagogue |
|
| Shawan Road | Falls Road to York Road | Cockeysville Hunt Valley |
Hunt Valley Town Center Hunt Valley Light Rail Stop Oregon Ridge Park |
Exit 20 off I-83 |
| Slade Avenue | Seven Mile Lane to dead end past Military Avenue | Pikesville | Baltimore Hebrew Congregation | Part of a longer road that is physically one road including Milford Mill Road, Slade Avenue, and Smith Avenue. This full road runs from a dead end slightly past Rolling Road to the Mt. Washington Light Rail Stop. |
| Smith Avenue | Seven Mile Lane to Mt. Washington Light Rail Stop | Pikesville | Pikesville Senior High School Wellwood International School Greenspring Shopping Center |
Part of a longer road that is physically one road including Milford Mill Road, Slade Avenue, and Smith Avenue. This full road runs from a dead end slightly past Rolling Road to the Mt. Washington Light Rail Stop. |
| Sollers Point Road | Holabird Avenue to Main Street | Dundalk | CCBC Dundalk campus | Part of route of bus routes 4, and 10. |
| Southeast Freeway/Boulevard | Baltimore Beltway to Back River Neck Road | Essex | Exit 36 off Baltimore Beltway. Is a limited-access highway known as "Southeast Freeway" until Old Eastern Avenue, where it becomes "Southeast Boulevard." | |
| Southwestern Boulevard | Wilkens Avenue (in Baltimore City) to Washington Boulevard | Arbutus Halethorpe |
Halethorpe MARC Rail Station | Part of US Route 1. Exit 12-A off Baltimore Beltway (from outer loop only). Has entrance to inner loop only via Leeds Avenue. |
| Stevenson Lane | Charles Street to Brook Road | Rodgers Forge Towson |
Part of route of bus routes 3 and 11. | |
| Stevenson Road | Old Court Road to Wiltonwood Road | Pikesville Stevenson |
Chizuk Amuno Congregation | Exit 21 off outer loop of Baltimore Beltway, shared with Park Heights Avenue |
| Sudbrook Lane/Sudbrook Road | Rockridge Road to Old Court Road | Sudbrook Park Pikesville |
One-lane bridge | North of Milford Mill Road it is known as Sudbrook Lane. South of Milford Mill Road it is known as Sudbrook Road. East of Reisterstown Road it is known as E. Sudbrook Lane. |
| Sulphur Spring Road | Selford Road to Washington Boulevard | Arbutus | BCPL Arbutus branch | Exit 11 off Baltimore Beltway from outer loop. Exit 11 is mainly one of the two interchanges between the Beltway and I-95, but also has a ramp leading to this road from the outer loop. This exit is used for reaching Washington Boulevard, which does not have an exit ramp from the outer loop. |
| Sweet Air Road | Jarrettsville Pike to Baldwin Mill Road | Jacksonville |
Read more about this topic: List Of Roads In Baltimore County, Maryland