MD 547 connects North Bethesda and Kensington with Garrett Park in central Montgomery County.

After passing the Academy of the Holy Cross, MD 547 enters the town of Garrett Park.

After serving as the town's main street, MD 547 veers southeast and its name changes to Knowles Avenue.

[1][2] Garrett Park Road was resurfaced with macadam and widened with concrete shoulders from U.S. Route 240 (now MD 355) east to the Kensington town limit at Summit Avenue between 1931 and 1933.

[6] That highway's present course through Kensington was completed as part of a railroad grade separation project that same year.