Maryland State Highway 100

Maryland Route 100
Paul T. Pitcher Memorial Highway
Maryland Route 100 highlighted in red
Route information
Maintained by MDSHA
Length:	22.38 mi (36.02 km)
Existed:	1970 – present
Major junctions
West end:	US 29 in Ellicott City
	MD 104 / MD 108 in Ellicott City MD 103 in Elkridge I-95 in Elkridge US 1 in Elkridge MD 295 in Hanover MD 713 in Hanover MD 170 in Severn I-97 in Glen Burnie MD 2 in Pasadena MD 10 in Pasadena
East end:	MD 177 in Jacobsville
Location
Counties:	Howard, Anne Arundel
Highway system
Maryland highway system Interstate US State Scenic Byways ← MD 99 MD 101 →

Maryland Route 100 (MD 100) is a major east–west highway connecting U.S. Route 29 (US 29) in Ellicott City (just north of Columbia) and MD 177 (Mountain Road) in Pasadena. MD 100 also connects to Interstate 95 (I-95), US 1, the Baltimore-Washington Parkway (MD 295), and I-97. The highway connects Howard County to the west with Anne Arundel County and the Chesapeake Bay to the east. MD 100 also provides access to the Baltimore-Washington International Airport (BWI) and the Arundel Mills shopping mall.

The eastern section of MD 100 in Anne Arundel County is known as the Paul T. Pitcher Memorial Highway. The name comes in dedication to Paul T. Pitcher, an Anne Arundel County executive, who originally conceived the highway.

The route begins as a six-lane divided expressway at US 29 near Ellicott City. There are then interchanges with MD 108, MD 104, Snowden River Parkway and MD 103.