The Chesapeake and Delaware Canal, often called the C&D Canal, connects the Delaware River to the Chesapeake Bay and Port of Baltimore. The waterway, a channel 35 feet deep and 450 feet wide, extends from Reedy Point on the Delaware River about 41 miles below Philadelphia. The Army Corps of Engineers Philadelphia District maintains the canal as well as the five high span bridges that cross it: Reedy Point, SR 1, Summit, St. Georges and Chesapeake City bridges. The C&D canal carries 40 percent of the shipping traffic in and out of the Port of Baltimore.