In 1974, US 9 was extended across the ferry from New Jersey to Delaware, replacing DE 28 between Laurel and Georgetown and DE 18 between Georgetown and Five Points. Between Five Points and the terminal of the Cape May–Lewes Ferry, US 9 followed DE 1/DE 14, Kings Highway, and Theodore C. Freeman Highway before coming to Cape Henlopen Drive. At the same time, US 9 Bus. was designated onto the former alignment of DE 18 between Five Points and Lewes as well as a portion of Cape Henlopen Drive connecting to US 9. US 9 Truck was created as a truck bypass of the portion of US 9 through Georgetown in 1983. DE 404 was extended to follow US 9 between Georgetown and Five Points by 1987.