MD 4 sign
Crews Will Direct Traffic Using a Flagging Operation on Sunday Morning, October 13
(October 10, 2024) – The Maryland Department of Transportation State Highway Administration will perform routine maintenance on the MD 4 (Governor Thomas Johnson) Bridge at the Calvert County / St. Mary’s County line starting at 6 a.m. Sunday, October 13. All lanes will open to traffic no later than 2 p.m. that afternoon, weather permitting.
Maintenance crews will clean the drainage systems and the bridge deck (driving surface). Drivers can expect single-lane closures guided using a flagging operation. The State Highway Administration will use flaggers and portable variable message signs to guide motorists safely through the work zone.
Drivers are asked to slow down in the work zone for the safety of all drivers and the crews working to improve our roadways.
For a list of all major State Highway Administration projects, go to
Project Portal, or visit the homepage at
roads.maryland.gov. For a look at real-time traffic conditions, go to
md511.maryland.gov.