U.S. Route 40 in Maryland

U.S. Route 40
Route information
Maintained by MDSHA, Baltimore DOT, and MdTA
Length:	221.31 mi (356.16 km)
Existed:	1926 – present
Tourist routes:	Historic National Road Chesapeake and Ohio Canal Scenic Byway Antietam Campaign Scenic Byway
Major junctions
West end:	US 40 at Pennsylvania border near Keyser's Ridge
	I-68 / US 219 near Grantsville US 220 in Cumberland I-70 / US 522 in Hancock I-81 near Hagerstown US 15 / US 340 in Frederick I-70 / I-270 in Frederick US 29 near Ellicott City I-695 in Catonsville US 1 in Baltimore I-95 in Baltimore
East end:	US 40 at Delaware border in Elkton
Location
Counties:	Garrett, Allegany, Washington, Frederick, Carroll, Howard, Baltimore, City of Baltimore, Harford, Cecil
Highway system
United States Numbered Highway System List Special Divided Replaced Maryland highway system Interstate US State Scenic Byways ← MD 39 MD 41 →

I-68 / US 219 near Grantsville
US 220 in Cumberland
I-70 / US 522 in Hancock
I-81 near Hagerstown
US 15 / US 340 in Frederick
I-70 / I-270 in Frederick
US 29 near Ellicott City
I-695 in Catonsville
US 1 in Baltimore

...
Wikipedia