Portal:Maryland roads/Did you know/2

• ...that Maryland Route 135 once had a sign that suggested to truck drivers "If Brakes Fail Ditch Truck Immediately" on the highway's steep descent of Backbone Mountain?
• ... that the Benedict Bridge, which carries Maryland Route 231 between Charles and Calvert counties in Southern Maryland, was the southernmost crossing of the Patuxent River for 25 years?
• ... that Maryland Route 648I is the designation for the driveway to a Knights of Columbus hall and is named McGivney Way in honor of Michael J. McGivney, the founder of the organization?