Delaware Route 3 (DE 3) is a state highway northeast of the city of Wilmington in New Castle County, Delaware. The route runs from an interchange at Interstate 495 (I-495) in Edgemoor north to DE 92 in Hanbys Corner. The route passes through the suburban areas of Brandywine Hundred, Bellefonte, and Arden. It intersects U.S. Route 13 (US 13) in Edgemoor, US 13 Business (US 13 Bus.) in Bellefonte, and I-95 near Bellevue State Park. DE 3 was built as a state highway during the 1920s and 1930s. By 1968, the route was designated between US 13 (now US 13 Bus.) north to DE 92 on Marsh Road. The route was moved to its current alignment and terminus by 1984.