Maryland Route 100
…The route begins as a six-lane divided freeway at US 29 near Ellicott City. There are then interchanges with MD 108, MD 104, Snowden River Parkway and MD 103. At the junction with I-95, the road narrows to four lanes. Then MD 100 intersects with US 1 followed by an exit for the Dorsey station along MARC's…