Maryland Route 108

Maryland Route 108
State	MD
Type	MD
Route	108
Direction a	West
Terminus a	U.S. Route 40
Junctions	Interstate 70, Maryland Route 32, Maryland Route 97, U.S. Route 29
Direction b	East
Terminus b	Maryland Route 175
Counties	Baltimore County, Howard County, Montgomery County

Maryland Route 108 is a state highway in the U.S. state of Maryland connecting suburbs and rural communities between U.S. Route 40 and Maryland Route 175. The route passes through portions of Howard County, Baltimore County, and a small area adjacent to Montgomery County, serving as a connector between Interstate 70, Maryland Route 32, Maryland Route 97, and U.S. Route 29. MD 108 links historic towns, commuter corridors, and commercial centers near Columbia, Maryland, Ellicott City, and Silver Spring.

Route description

MD 108 begins near U.S. Route 40 and proceeds eastward through suburban and semi-rural landscapes, intersecting with Interstate 70 soon after its western terminus and providing access toward Baltimore and Hagerstown. The highway traverses historic hamlets such as Woodbine and Clarksville, offering connections to Maryland Route 94 and Maryland Route 32 that facilitate travel toward Frederick, Maryland, Annapolis, and Towson. Traveling east, MD 108 becomes a principal arterial paralleling commuter routes to Columbia, Maryland and crossing corridors to Elkridge and Laurel via links with U.S. Route 29 and Maryland Route 100.

Within Howard County, MD 108 serves dense residential developments adjacent to Lake Elkhorn, Dorsey Hall, and the Rouse Company-developed Columbia, Maryland villages, interfacing with Maryland Route 104 and providing local access to Merriweather Post Pavilion, Howard County General Hospital, and Howard Community College. Eastbound, the road skirts commercial clusters near Ellicott City before meeting Maryland Route 103 and crossing streams that feed the Patapsco River watershed. Approaching its eastern terminus, the route ties into MD 175, enabling commuters to reach Fort Meade, Lake Claire, and employment centers linked to National Security Agency-adjacent campuses.

History

The corridor that became MD 108 evolved from colonial roads linking plantation centers and taverns documented in 18th- and 19th-century maps held by institutions such as the Maryland Historical Society and referenced in studies by the Smithsonian Institution. Early 20th-century improvements followed state initiatives similar to those that produced U.S. Route 40 and U.S. Route 29, with paving projects executed by the Maryland State Roads Commission during the 1910s and 1920s. Mid-century expansions paralleled suburban growth driven by developers like the Rouse Company and federal investments associated with installations including Fort Meade.

Post-World War II traffic increases prompted realignments and widenings in the 1950s–1970s, coordinated with construction of Interstate 70 and the proliferation of commuter suburbs surrounding Baltimore and Washington, D.C.. The route’s role as a feeder to Maryland Route 32 and U.S. Route 29 grew with the opening of Columbia Town Center and retail developments anchored by national chains and regional malls tied to the expansion patterns chronicled by urban planners at Johns Hopkins University and University of Maryland, College Park. Later preservation efforts balanced improvements with protection of historic districts like those listed by the National Register of Historic Places in Howard County.

Major intersections

The primary junctions along MD 108 include interchanges and at-grade intersections with nationally significant corridors and state routes that link regional destinations: - Western terminus at U.S. Route 40 near access to Baltimore - Interchange with Interstate 70 providing routes to Hagerstown and Frederick - Intersection with Maryland Route 32 connecting to Annapolis and Laurel - Crossing with Maryland Route 97 enabling travel toward Carroll County - Junction with U.S. Route 29 for access to Columbia and Germantown - Eastern terminus at Maryland Route 175 offering connections to Fort Meade and Odenton

Auxiliary routes

MD 108 has several auxiliary and related alignments established to handle traffic flow, bypasses, and old alignments. These include short connector segments and former alignments that local jurisdictions have redesignated or transferred to county maintenance. Some spurs provide direct access to community facilities such as Howard County General Hospital and village centers in Columbia, Maryland. Ancillary routes historically mirrored the pattern of spur routes created during the state’s mid-20th-century highway renumbering alongside routes like Maryland Route 103 and Maryland Route 104.

Future developments

Planned improvements for MD 108 focus on congestion mitigation, safety upgrades, and multimodal accommodations influenced by regional planning authorities including the Baltimore Metropolitan Council, Howard County Department of Public Works, and the Maryland Department of Transportation. Projects under consideration or design emphasize intersection modernization near Ellicott City and capacity enhancements coordinated with transit planning involving MARC Train corridors and park-and-ride facilities serving commuters to Washington, D.C. and Baltimore. Preservation of nearby historic sites listed by the Maryland Historical Trust and environmental reviews tied to the Patapsco River State Park watershed guide project scopes and funding priorities.

Category:State highways in Maryland Category:Roads in Howard County, Maryland Category:Roads in Baltimore County, Maryland