U.S. Route 13 Alternate

U.S. Route 13 Alternate
State	DE
Type	US
Route	13 Alt.
Length mi	26.2
Established	1939
Direction a	South
Terminus a	Suffolk
Direction b	North
Terminus b	Wilmington
Counties	Virginia Beach; Nansemond; Sussex; Kent; New Castle

U.S. Route 13 Alternate is an alternate alignment of U.S. Route 13 serving portions of the Delmarva Peninsula and the Atlantic Coast that provides an alternative to the mainline U.S. Route 13 through urban, suburban, and rural corridors. The route connects multiple county seats, ferry terminals, military installations, and commercial centers while intersecting with interstate highways, state routes, and rail corridors.

Route description

The corridor begins near Norfolk and proceeds northward past Naval Station Norfolk, Portsmouth, and Chesapeake Bay Bridge–Tunnel approaches, traversing mixed residential and commercial districts adjacent to Interstate 64, Interstate 264, and Interstate 664. Moving into Sussex County, the alignment parallels the Delaware Bay, crossing agricultural landscapes near Dover and skirting the edge of Fort Delaware and Bombay Hook. Approaching Wilmington, the alternate route intersects with U.S. Route 40, Interstate 95, and freight lines of CSX and DelDOT facilities, providing access to port terminals, industrial parks, and urban neighborhoods.

History

The alignment originated in the early 20th century amid turnpike improvements sponsored by entities such as the Delaware Department of Highways and the Virginia DOT, following earlier paths used by stagecoaches and Pennsylvania Railroad spurs. Designation as an alternate route arose during the 1930s and 1940s in response to traffic diversion needs highlighted by Great Depression era public works and later by wartime mobilization tied to World War II shipyards and installations at Norfolk Naval Shipyard and Dover AFB. Subsequent decades saw upgrades influenced by federal programs such as the Federal Aid Highway Act of 1956 and local planning commissions including MPOs in the Delaware Valley. Realignments corresponded with construction of U.S. Route 13 bypasses, the expansion of Interstate 95, and bridge projects overseen by authorities like the DRBA.

Major intersections

The corridor intersects numerous federal and state arteries, including nodes at I‑264, I‑64, US 460, DE 1, US 113, and US 40. Key junctions provide connections to ferry services operating under the aegis of Cape May–Lewes Ferry and terminal operations influenced by Port of Wilmington logistics. Rail grade separations link with corridors controlled by Norfolk Southern and Amtrak, while interchange improvements have been coordinated with agencies including FHWA and state transportation departments.

Special routes

Related alignments and business spurs developed from the corridor include business routes serving central districts of Pocomoke City, Salisbury, and Georgetown, as well as truck bypasses around sensitive areas such as Rehoboth Beach and historic districts like Lewes. Designations have at times involved state route overlays administered by MDSHA and DTC coordinated transit adjustments. During seasonal peaks, temporary routing adjustments have been implemented in cooperation with NWS and local emergency management offices such as DEMA.

Transportation and traffic

Traffic patterns reflect seasonal tourism to resort areas including Ocean City and commuter flows into employment centers such as Norfolk, Dover, and Wilmington. Freight movements link agricultural exporters, poultry processors, and containerized cargoes to networks anchored by CSX, Norfolk Southern, and intermodal facilities. Congestion hotspots near I‑95 interchanges and coastal resort gateways have prompted traffic studies by entities like University of Delaware transportation research groups and planning initiatives supported by MWCOG partnerships.

Future developments

Planned projects include capacity enhancements coordinated with DelDOT and Virginia DOT involving corridor widenings, interchange reconstructions in coordination with FHWA grant programs, and multimodal investments to improve transit access with operators such as DART First State and regional rail proposals considered by SEPTA and Amtrak. Environmental mitigation and resilience measures against sea level rise are being evaluated with input from NOAA, USACE, and state coastal programs to preserve connectivity for ports, bases, and coastal communities.

Category:U.S. Highways in Delaware Category:U.S. Highways in Virginia