Advisory
AVOID Three Notch Rd and Great Mills Rd for the next several hours due to inoperable traffic light.
AVOID Three Notch Rd and Great Mills Rd for the next several hours due to inoperable traffic light. 
St. Mary's County Sheriff's Office advises you to AVOID Three Notch Rd and Great Mills Rd due to a traffic congestion. The inoperable traffic light at Three Notch Rd and Great Mills Rd has caused significant traffic backups and other issues. Please use Gate 1 or Gate 3 for base access.
Address/Location
St. Mary's County Sheriff's Office
23150 Leonard Hall Dr
Leonardtown, MD 20650
Contact
Emergency: 9-1-1
Non-emergencies: 301-475-8008