Delaware Route 20 partially coincident with U.S. Route 13 in Delaware
Delaware Route 20 (DE 20) is an east–west state highway in Sussex County, Delaware. Its western terminus is the Maryland state line in Reliance, where the road continues as Maryland Route 392 (MD 392). Its eastern terminus is DE 54 west of Fenwick Island.  The route runs through rural areas of Sussex County and passes through the towns of Seaford, Millsboro, and Dagsboro. DE 20 intersects U.S. Route 13 (US 13) in Seaford, US 9 in Hardscrabble, US 113 and DE 24 in Millsboro, DE 26 in Dagsboro, and DE 17 in Roxana. DE 20 was originally created by 1936 to run from the Maryland border east to US 113 in Millsboro. By 1970, it was realigned to bypass Seaford. The route was extended east to DE 1 in Fenwick Island by 1994; however, the eastern terminus was cut back to DE 54 in 2005 to avoid the concurrency with that route.Upon leaving Dagsboro, the road passes to the south of Prince George's Chapel and DE 20 splits from DE 26 by heading southeast on Armory Road. The road heads to the north of Indian River High School and runs through agricultural areas with some woods and homes. In Omar, the route crosses Omar Road and becomes Pyle Center Road. DE 20 continues to an intersection with DE 17 in Roxana. Following this intersection, the route becomes Zion Church Road and runs through more rural land, crossing DE 54 Alt. and Dirickson Creek. Farther southeast, residential development near the road increases and it widens to four lanes. DE 20 comes to its eastern terminus at an intersection with DE 54 west of the town of Fenwick Island.The section of DE 20 east of DE 26 serves as part of a primary hurricane evacuation route from the Fenwick Island area to points inland while the section of DE 20 between US 13 and US 113 serves as part of a secondary hurricane evacuation route from the coastal areas. The portion of the route between US 13 in Blades and Fire Tower Road is designated as part of the Nanticoke Heritage Byway, a Delaware Byway. DE 20 has an annual average daily traffic count ranging from a high of 37,522 vehicles at the Middleford Road intersection along the US 13 concurrency in Seaford to a low of 5,240 vehicles at the Shiloh Church Road intersection between Hardscrabble and Millsboro. The portions of DE 20 concurrent with US 13 and US 113 are part of the National Highway System.
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