US 1 in Maryland

US 1 crossing the Mason-Dixon Line as it leaves Pennsylvania and enters Maryland.

US 1 crosses the Susquehanna River via a dam.

This intersection in Harford County has changed dramatically since this picture was taken.

MARC commuters line the side of US 1.

The northbound and southbound roadways split through Laurel, Maryland.

Continue:

Washington, DC	US 1	Pennsylvania
	US 40	Maryland
BWI Thurgood Marshall Airport	Amtrak Acela Express	Baltimore
	Amtrak Cardinal	Baltimore
	Amtrak Carolinian	Baltimore
	Amtrak Crescent	Baltimore
BWI Thurgood Marshall Airport	Amtrak Northeast Regional	Baltimore
	Amtrak Palmetto	Baltimore
	Amtrak Silver Meteor	Baltimore
	Amtrak Silver Star	Baltimore
BWI Thurgood Marshall Airport	Amtrak Vermonter	Baltimore
BWI Thurgood Marshall Airport	Amtrak Virginia Service	Baltimore
Muirkirk	MARC Camden Line	Baltimore Camden Station
Halethorpe	MARC Penn Line	Baltimore Penn Station

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