Route 185

Route 185
Country	USA
Type	State
Route	185
Length mi	xx.x
Established	19xx
Direction a	South
Terminus a	Interstate 95
Direction b	North
Terminus b	U.S. Route 1
Counties	New Castle County

Route 185 is a state highway serving a regional corridor connecting suburban, industrial, and commercial areas. The route links major arterial highways and local thoroughfares, providing access to Interstate 95, U.S. Route 13, U.S. Route 1, and municipal centers. It functions as a commuter artery, freight connector, and evacuation route in statewide planning and regional transportation networks.

Route description

The alignment begins at an interchange with Interstate 95, proceeding north through mixed-use districts adjacent to Wilmington and Newark suburbs. It intersects with U.S. Route 13, passing near industrial parks developed by Delaware Economic Development Office, and providing linkages to Wilmington Airport and Christiana Mall. The corridor traverses wetlands and stream crossings linked to the Christina River, with nearby parks such as Brandywine Park and White Clay Creek State Park visible from portions of the route. Roadway design varies between divided highway segments near Interstate 95 and undivided two-lane sections that pass residential neighborhoods adjacent to Delaware Avenue and Market Street.

History

The corridor's origins trace to early 20th-century turnpikes connecting Philadelphia and Baltimore, later influenced by the expansion of Pennsylvania Railroad freight yards and the rise of DuPont manufacturing in Wilmington. Mid-century planning incorporated the route into state highway networks during initiatives led by the Delaware Department of Transportation amid postwar suburbanization linked to the Interstate Highway System rollout authorized under the Federal Aid Highway Act of 1956. Significant realignments occurred alongside construction projects tied to Interstate 95 and regional connectors developed during the administrations of governors such as Elbert N. Carvel and Pierre S. du Pont IV. Environmental reviews during the 1970s referenced impacts to waterways regulated under statutes involving the Clean Water Act and consultations with agencies like the U.S. Fish and Wildlife Service.

Major intersections

The route intersects or connects with several principal highways and local arterial roads, including Interstate 95, U.S. Route 13, U.S. Route 1, and state routes such as Delaware Route 4 and Delaware Route 52. It provides access ramps to regional transit nodes serving Wilmington Station and links to bus corridors managed by DART First State. Near its northern terminus, the roadway meets thoroughfares leading to institutions including University of Delaware satellite facilities and medical centers like ChristianaCare.

Traffic and usage

Traffic volumes reflect commuter peaks between suburban bedroom communities and employment centers in Wilmington and Newark, with freight movements tied to distribution centers serving the Delaware Valley and intermodal facilities associated with the Port of Wilmington. Peak-hour congestion is exacerbated by incidents on Interstate 95, prompting spillover queuing onto the route, and seasonal tourism to attractions such as Longwood Gardens influences weekend flows. Transportation studies by the Delaware Valley Regional Planning Commission and modelling using standards from the Federal Highway Administration inform capacity and safety improvements; crash data have prompted intersection enhancements near Christiana Mall and pedestrian safety measures at crossings by Amtrak right-of-way corridors.

Future developments

Planned improvements include corridor resurfacing, bridge rehabilitation over tributaries to the Christina River, and capacity upgrades coordinated with statewide plans from the Delaware Department of Transportation. Proposals align with funding programs under bills advanced in the Delaware General Assembly and federal grants distributed through the U.S. Department of Transportation. Multimodal integration concepts propose enhanced bus stops serving DART First State routes, bicycle infrastructure connecting to East Coast Greenway segments, and transit-oriented access near employment clusters influenced by Delaware Prosperity Partnership initiatives.

Related routes and designations

The corridor is part of a network of numbered state highways that include adjacent designations like Delaware Route 2, Delaware Route 7, and Delaware Route 9, and interacts operationally with federal routes such as U.S. Route 13 and U.S. Route 40. Historical alignments and auxiliary connectors have been documented alongside regional projects coordinated by agencies including the Federal Transit Administration and regional planning bodies like the Wilmington Area Planning Council. Design standards reference the American Association of State Highway and Transportation Officials manuals used across the state.

Category:State highways in Delaware