DOT is responsible for the planning, design, building and maintenance of: 2,000 miles of roadways; 7 miles of interstate highways; 298 bridges and culverts; 3,600 miles of sidewalks, curbing and gutters; 456 miles of alleys; 72,000 street lights; 1,300 signalized intersections; and 250,000 traffic and informational signs within the City of Baltimore. Licenses, Registrations and Certificates: Have a valid Maryland Class C Noncommercial driver's license, or an equivalent out-of-state driver's license acceptable to the Office of Risk Management is required and eligibility to obtain a Baltimore City driver's permit.