 The state highway heads east as a six-lane divided highway which drops to four lanes at its intersection with a ramp from southbound MD 10 (Arundel Expressway) and ramps to and from westbound MD 100.MD 177 passes under MD 10, spawns a ramp onto northbound MD 10, and meets the southern end of MD 648 (Baltimore–Annapolis Boulevard) at Lipin's Corner.At the next intersection, unsigned MD 915 (Long Hill Road) splits to the south.