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Highway Access
MD Route 2 connects with U.S. 50/301, and MD Route 4 connects with U.S. 301 and the Capital Beltway (I-495). The Thomas Johnson Bridge over the Patuxent River connects MD Routes 2/4 in the southern part of the County with MD Routes 5/235 in St. Mary's County.
Traffic Volume Maps
Click here to view the Maryland Department of Transportation's Traffic Volume Maps by County.
Trucking
67 local and long-distance trucking establishments are located in Southern Maryland.
Rail
The closest rail depot (CSXT) is in adjacent Prince George's County at Upper Marlboro, approximately 30 minutes away.

Airports
Calvert is served by three (3) major airports:
- Baltimore-Washington International (BWI) Thurgood Marshall Airport is located between Baltimore and Washington, DC.
- Reagan Washington National Airport (DCA) is located adjacent to Washington, DC,
- Dulles International Airport (IAD) is located west of Washington, DC
- Also one local airport: St. Mary's County Regional Airport is located southeast of Washington, DC
| Airports - Travel Time and Contact |
| Baltimore- Washington International (BWI) |
1 hr 6 minutes |
(800) 435.9294 |
| Reagan Washington National (DCA) |
51 minutes |
(703) 417.8000 |
| Dulles International (IAD) |
1hr 25 minutes |
(703) 572.2700 |
| St. Mary's County Regional |
45 minutes |
(301) 373.5416 |
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Ports
Calvert is served by one of the nation's largest seaports, The Port of Baltimore, with a 50' channel (64 miles from Prince Frederick). It is the only port in the United States that can be reached by two distinct routes. It's sea lanes remain ice-free throughout the year. It is a leading U.S. automobile and break-bulk port with 6 public terminals including the state-of-the-art Intermodal Container Transfer Facility.
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