Depending upon where you leaving from but the exit for the cruise terminal is exit 55 on interstate I 95 Maryland starts at exit 102 I believe so given 55 miles an hour to get to that exit I think it'll be like 1 hour and 5 minutes from the point you get to Maryland
Looks like 3 hours depending on your departure point, it took us 6 1/2 hours from western new York, easy trip.
Thanks! Your answer is awaiting moderation.