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 first was known as the Mountain Road Extension, stretching between Governor Ritchie Highway and the old Maryland Route 3, now Interstate 97.

[3] The eastern section, originally known as the Mountain Road Bypass, was constructed east of Ritchie Highway in the late 1970s.