MD 146 begins at the Towson Roundabout, a five-leg, racetrack-shaped
roundabout in the center of Towson. The roundabout also features MD 45 (York Road), which heads south toward
Baltimore and northwest toward
Lutherville, and
Joppa Road, a county-maintained highway that runs west toward
Brooklandville and east toward
Parkville. MD 146 heads northeast as Dulaney Valley Road, a four-lane
divided boulevard that passes along the west side of the
Towson Town Center shopping mall and the campus of
Goucher College. The state highway meets
Interstate 695 (Baltimore Beltway) at a
partial cloverleaf interchange. The ramp from the westbound Beltway to MD 146 connects via Hampton Lane, which heads east past
Towson United Methodist Church toward
Hampton National Historic Site. North of the Beltway, MD 146 is a five-lane road with a
center left-turn lane that passes between the suburbs of
Hampton to the east and Lutherville to the west. MD 146 reduces to two lanes just north of Pot Spring Road and its traversal of Long Quarter Branch, which flows into Loch Raven Reservoir. The state highway passes between
Timonium to the west and the reservoir parkland on the east. North of Timonium Road, MD 146 fully enters Loch Raven Reservoir Park. At Old Bosley Road, the state highway curves east and crosses the reservoir. Just east of the bridge, Dulaney Valley Road continues east while MD 146 veers north as Jarrettsville Pike. The state highway passes by the historic home
Eagle's Nest as it leaves the reservoir valley. MD 146 intersects Sunnybrook Road and Merrymans Mill Road in the hamlet of Sunnybrook before passing through Jacksonville, a community also known as Phoenix that is centered at the highway's intersection with
MD 145. MD 145 heads east as Sweet Air Road toward
Baldwin and west as Paper Mill Road toward
Cockeysville. North of Jacksonville, MD 146 crosses Little Gunpowder Falls into Harford County. The state highway passes through the communities of Hess and Taylor, where the highway passes west of the
Ladew Topiary Gardens and meets the northern end of
MD 152 (Fallston Road). MD 146 reaches its northern terminus at its intersection with MD 23 (Norrisville Road) in the hamlet of Madonna west of Jarrettsville. The roadway continues north as county-maintained Madonna Road. MD 146 is a part of the
National Highway System as a principal arterial from MD 45 in Towson to MD 145 in Jacksonville. ==History==