Location: Washington Blvd and MD 100, Elkridge, Howard Cty Shortly after MD 103, we’ll approach MD 100. Location: Washington Blvd and MD 100, Elkridge, Howard Cty Exit for MD 100 east. Location: Washington Blvd and MD 100, Elkridge, Howard Cty Follow 100 west to Ellicott City. Location: Washington Blvd and MD 100, Elkridge, Howard Cty … Continue reading U.S. Route 1, MD-103 to MD-100