"Maryland Department of Transportation
Emergency Travel Information"

Toll Bridges and Tunnels including the Chesapeake Bay Bridge 
http://www.mdta.state.md.us/mdta/servlet/dispatchServlet?url=/Emergency/emergencyDisplayIndex.jsp

Baltimore Region Transit Advisories and System Status
http://www.mtamaryland.com/

Washington Metro Transit Advisories and System Status http://www.wmata.com

State Highway Travel Advisories and Road Closures
http://www.chart.state.md.us/road_closures/road_closures.asp

BWI Airport Travel Advisories and Real Time Flight Information http://www.bwiairport.com/in_conup.shtml

Port of Baltimore Status and Weather Advisories http://www.mpa.state.md.us/opsalert/index.htm

MVA Office Status
http://www.mva.state.md.us