As a state trunkline, M-247 runs north from M-13 before turning to access the park, a distance of 3.036 miles (4.886 km).

Starting at its southern terminus at M-13, M-247 follows Euclid Avenue north about 2.7 miles (4.3 km), crossing the Kawkawlin River.

When it meets Beaver Road, M-247 turns east leading directly into the state park and ends at its entrance.

This time M-47 was realigned to a former section of US Highway 10 (US 10), and the connection to the state park was assigned the M-247 designation.

[2] This was the highest highway number in the state, excluding Interstates, until the 1998 designation of M-553 in the Upper Peninsula.