Location: Sussex Hwy and Concord Rd, Sussex Cty Reassurance shield as DE 20 joins US-13. Location: Sussex Hwy and Riverside Dr, Sussex Cty Trucks are advised to stay on US-13 as the highway follows the east edge of Seaford. Location: Sussex Hwy and Norman Eskridge Hwy, Seaford At the light, turn left for DE 20 … Continue reading U.S. Route 13, DE 20 to DE 20