Maryland Route 528 (MD 528) is a state highway in the U.S. state of Maryland. Known for most of its length as Coastal Highway, the state highway runs 9.04 miles (14.55 km) from the southern terminus of its companion route, unsigned Maryland Route 378 (MD 378), in downtown Ocean City north to the Delaware state line at the northern edge of the resort town, where the highway continues as Delaware Route 1 (DE 1). MD 528 and MD 378 are the primary north–south streets of Ocean City, where they provide access to countless hotels, condos, restaurants, shops, and other businesses catering to tourists. These highways experience heavy seasonal traffic and provide access to hurricane evacuation routes, which include U.S. Route 50 (US 50), MD 90, and DE 54. Both Baltimore Avenue and Philadelphia Avenu