Maryland Route 144 (
MD 144) is a collection of
state highways in the
U.S. state of
Maryland. These highways are sections of old alignment of
U.S. Route 40 (US 40) between
Cumberland and
Baltimore. Along with
US 40 Scenic, US 40 Alternate, and a few sections of county-maintained highway, MD 144 is assigned to what was once the main highway between the two cities, connecting those endpoints with
Hancock,
Hagerstown,
Frederick,
New Market,
Mount Airy,
Ellicott City, and
Catonsville. MD 144 has seven disjoint sections of mainline highway that pass through mountainous areas of
Allegany and
Washington counties and the rolling
piedmont of
Frederick,
Carroll,
Howard, and
Baltimore counties.