The state highway was extended west to Cockeysville in the early 1980s in a maintenance swap.

The state highway heads east as two-lane undivided Ashland Road, which crosses over Western Run.

Immediately to the south is the grey arch through truss bridge that previously carried MD 145 across the reservoir.

MD 145 leaves the Loch Raven Reservoir park reservation east of Phoenix Road and passes through a golf course.

Sweet Air Road continues east as a county highway through a housing development to a cul-de-sac near Little Gunpowder Falls.

[11] In 1922, the Baltimore City Department of Transportation, which maintains most of the roads within the reservoir park area, replaced the covered bridge with an arch through truss bridge in preparation for the filling of the expanded Loch Raven Reservoir.