After I-70 was constructed east of Hancock in the early 1960s, MD 615 was extended to its current length parallel to the new freeway.

The state highway heads west as a two-lane undivided road, closely paralleling I-70 and US 40 to the south.

[1][2] Heavenly Acres Ridge Road continues north as SR 2001 in southeastern Fulton County.

[11][12] This freeway was marked as I-70 in addition to US 40 in 1962 and MD 615 was extended south and east from Heavenly Acres Ridge Road along its modern extent.

[13] The entire route is in a sparsely populated area east of Hancock in Washington County.