Maryland Route 185

Maryland Route 185
State	MD
Type	MD
Route	185
Alternate name	Connecticut Avenue
Length mi	6.75
Established	1927
Direction a	South
Terminus a	Washington, D.C.
Direction b	North
Terminus b	Rockville
Counties	Montgomery County

Maryland Route 185 is a state highway in Montgomery County known primarily as Connecticut Avenue, linking the District of Columbia boundary with suburban Rockville. The route serves as a major commuter artery connecting neighborhoods, federal facilities, cultural landmarks, and transit nodes associated with Washington, D.C., Silver Spring, and Bethesda. It lies within a corridor that intersects with corridors used by the Washington Metro, regional roads, and proposed transit projects championed by agencies such as the Maryland Department of Transportation.

Route description

MD 185 begins at the District of Columbia line adjacent to Woodley Park and continues north through Chevy Chase, skirting institutions like The National Zoo and residential areas tied to notable addresses such as Embassy Row. The highway proceeds past Chevy Chase Club, paralleling rights-of-way used by historic carriage roads and modern arterial streets that connect to Massachusetts Avenue and Wisconsin Avenue. Into Bethesda the route passes near medical and research hubs including those associated with NIH and Walter Reed‑adjacent facilities, intersecting major routes like I-495.

Continuing north, Connecticut Avenue traverses commercial districts that abut Bethesda Row and cultural venues proximate to Strathmore, linking to Rock Creek Park access points and recreational greenways associated with C&O Canal. The road extends to the urban center of Rockville, terminating near corridors that feed into MD 355 and local streets that serve federal and state offices, academic institutions such as Montgomery College, and transit interchanges for MARC and WMATA services.

History

The alignment follows an early 20th‑century improvement program influenced by planning initiatives connected to entities like the National Capital Park and Planning Commission and the United States Bureau of Public Roads. The designation was assigned during statewide numbering reforms parallel to projects by the Maryland State Roads Commission and infrastructure investments amid the Great Depression era, later modified after wartime and postwar suburbanization booms that mirrored patterns seen in developments around Arlington and Alexandria. Federal wartime expansions, highway funding via the Federal-Aid Highway Act of 1956, and regional growth prompted capacity upgrades, intersection realignments, and bridge work coordinated with agencies such as the Army Corps of Engineers where crossings impacted watercourses linked to Rock Creek.

Suburban retail growth along the corridor reflected trends similar to those around Tysons Corner, leading to traffic management measures developed with input from planning bodies like Montgomery County Planning Board and transportation advocacy groups associated with Greater Greater Washington. The route has seen streetscape projects responding to multimodal priorities advocated by organizations including American Institute of Architects chapters and local historical societies preserving adjacent residential districts influenced by architects linked to the Colonial Revival movement.

Major intersections

The highway intersects multiple principal routes that form the regional network: connections with Western Avenue at the District line, junctions with Arizona Avenue/Nebraska Avenue-adjacent corridors, crossings of MD 191, interchange ramps to I-495, and termini nearing MD 355 in Rockville. Intersections provide access to parklands managed by the National Park Service, to commuter rail services at stations influenced by MARC planning, and to bus rapid transit proposals coordinated with the Washington Metropolitan Area Transit Authority.

Auxiliary routes

Several short connectors and service roads associated with the route were established to facilitate access to medical campuses, shopping centers, and residential complexes developed during the postwar era. These include ramps and frontage streets constructed in coordination with the Maryland Department of Transportation State Highway Administration and local municipal works divisions. Some auxiliary alignments were created to improve links to transit nodes influenced by WMATA bus operations and park-and-ride facilities aligned with county transit strategies promoted by the Montgomery County Department of Transportation.

Traffic and usage

Traffic volumes reflect commuter patterns to major employment centers such as Bethesda Naval Hospital-area medical offices, research institutions like NIH, federal offices in Washington, D.C., and suburban commercial nodes comparable to Silver Spring. Peak hour congestion has prompted analysis by regional planning bodies including the Metropolitan Washington Council of Governments, and multimodal initiatives have been advocated by civic organizations and transit coalitions inspired by models from Portland and Seattle. Safety studies have referenced standards from the American Association of State Highway and Transportation Officials.

Future developments

Proposed improvements involve coordination among Maryland Department of Transportation, Montgomery County, and federal partners to address multimodal access, pedestrian safety near cultural institutions such as Strathmore, and transit connectivity to future Purple Line‑related corridors and WMATA planning scenarios. Funding and environmental review processes may engage agencies like the Environmental Protection Agency and stakeholders including business improvement districts modeled after Downtown Bethesda, Inc. and neighborhood associations preserving historic districts similar to those protected by the National Trust for Historic Preservation.

Category:State highways in Maryland Category:Transportation in Montgomery County, Maryland