Soon after leaving the national capital area, L'Enfant prepared the initial plans for the city of Paterson, in northeast New Jersey along the Passaic River, but was discharged from this project after a year had passed.(2) (3) <br>(3) <br>(3) Bryan, pp. 181–182.</ref> However, in 1846 the city reinstated the original scheme proposed by L'Enfant after the city's raceway system encountered problems. During the same period (1792–1793) he designed Robert Morris' mansion in Philadelphia, which was never finished because of his delays and Morris' bankruptcy. In 1794, L'Enfant was placed in charge of reconstructing Fort Mifflin on Mud Island in the Delaware River below Philadelphia.