Delaware Route 5 (DE 5) is a 19.49-mile-long (31.37 km) state highway in Sussex County, Delaware. The route runs from River Road and Oak Orchard Avenue on the Indian River Bay in Oak Orchard north to DE 1, north of Milton. Along the way, DE 5 passes through rural areas along with the communities of Long Neck, Harbeson, and Milton. The route has concurrencies with DE 23 and DE 24 in the Long Neck area and crosses U.S. Route 9 (US 9)/DE 404 in Harbeson and DE 16 in Milton. DE 5 features one alternate route, DE 5 Alternate (DE 5 Alt.), which provides a bypass of Milton. DE 5 was built as a state highway in the 1920s and 1930s. The road between Long Neck and north of Milton, including present-day DE 5 north of DE 24, was designated as part of a short-lived DE 22 in the 1930s. DE 5 was designat