Maryland Route 121

Maryland Route 121
Clarksburg Road
Route information
Maintained by MDSHA
Length:	4.42 mi[1] (7.11 km)
Major junctions
South end:	MD 117 in Boyds
	I-270 in Clarksburg Stringtown Road in Clarksburg Dead end in Clarksburg
North end:	MD 355 in Clarksburg
Highway system
Maryland highway system Interstate • US • State • Minor • Former • Turnpikes ← MD 119 MD 122 →

Maryland Route 121, also known as Clarksburg Road, is a Maryland state highway that goes from Boyds to Clarksburg in Montgomery County, through Black Hill Regional Park.

Route description

An aerial view of the interchange between I-270 and MD 121 in Clarksburg

Maryland Route 121 begins at a wide three-way intersection with MD 117 near Boyds. The south and west legs of the intersection consist of MD 117 (Barnesville Road); the north leg is MD 121, following Clarksburg Road, which curves to the northeast on a two-lane, shouldered alignment. It very quickly encounters a bridge over Little Seneca Lake. The shoulders quickly end on the opposite shore and the road curves slightly more sharply as it passes through Burdette's cluster of homes. The route then enters the open countryside, weaving through farms and small patches of woodland before it passes through its interchange with Interstate 270. The MD 121 designation ends at the very last ramp of I-270, as does the road's name of Clarksburg Road. The roadway continues, however, as Stringtown Road, continuing for quite a distance north and ending at Kings Valley Road. A separated section of MD 121 officially designated MD 121A but signed as MD 121 begins at a dead end near of I-270 and heads northeast along Clarksburg Road. It intersects Gateway Center Drive, which connects to Stringtown Road, before coming to an end at MD 355.^[1][2]

Junction list

The entire route is in Montgomery County.

Location	Mile [1]	Roads intersected	Notes
Boyds	0.00	MD 117 (Clarkesburg Road) to MD 28	Southern terminus of MD 121
Clarksburg	3.83	I-270 (Eisenhower Memorial Highway) – Frederick, Washington	I-270 exit 18
	3.96	Stringtown Road	Northern terminus of MD 121
	0.00	Dead end	Southern terminus of MD 121A
	0.46	MD 355 (Frederick Road) – Hyattstown, Comus	Northern terminus of MD 121A

References

1. ^ ^{a b c} Maryland State Highway Administration (2008). "Highway Location Reference: Montgomery County" (PDF). http://apps.roads.maryland.gov/KeepingCurrent/performTrafficStudies/dataAndStats/hwyLocationRef/2008_hlr_all/co15.pdf. Retrieved 2010-04-21. 
2. ^ Google, Inc. Google Maps – overview of Maryland Route 121 (Map). Cartography by Google, Inc. http://maps.google.com/maps?f=d&source=s_d&saddr=maryland+117+and+maryland+121&daddr=maryland+121+and+maryland+355&geocode=&hl=en&mra=ls&sll=39.174588,-77.261181&sspn=0.014472,0.042272&ie=UTF8&ll=39.212571,-77.296886&spn=0.057325,0.169086&t=h&z=13. Retrieved 2010-04-27. 

External links