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Randolph Road
Randolph Road is a county highway in the U.S. state of Maryland. The highway is the major component of a mostly four- to six-lane highway spanning southern Montgomery County and northwestern Prince George's County that also includes Montrose Road, Montrose Parkway, and Cherry Hill Road, and forms an important link between eastern Montgomery County and Rockville. Montrose Road begins at Maryland Route 189 (MD 189) in Potomac. The highway heads east through a junction with Interstate 270 (I-270) before the main course continues as Montrose Parkway in North Bethesda. Montrose Parkway continues through a junction with MD 355, east of which the highway becomes Randolph Road. Randolph Road intersects MD 586 and MD 185 in Wheaton, MD 97 in Glenmont, and MD 650 in Colesville. The highway continues southeast toward Fairland, where it meets U.S. Route 29 (US 29). The highway continues from US 29 as Cherry Hill Road through an intersection with MD 212 in Calverton before reaching its eastern end at US 1 in College Park.
A significant portion of Montrose Road, Randolph Road, and Cherry Hill Road existed along or near their present alignments by the early 20th century. The major exceptions were Montrose Road west of I-270 and Randolph Road from North Bethesda to Glenmont. Much of the county highways were improved as modern roads by the mid-1940s. Randolph Road from Glenmont to Colesville was originally known as Glenmont Road and constructed as Maryland Route 183 in the late 1910s. The North Bethesda–Glenmont stretch of Randolph Road was built as a four-lane divided highway in the 1950s and early 1960s. MD 183 was expanded to a divided highway in the mid-1970s then transferred to county control in the early 1980s. Montrose Road was reconstructed as a temporary connecting route associated with the construction of I-270 in the late 1950s; the highway was extended to Potomac in the late 1980s. The first phase of Montrose Parkway was constructed in the late 2000s; the parkway will be extended east to MD 586 in the future.
==Route description==
The continuous highway comprising Montrose Road, Montrose Parkway, Randolph Road, and Cherry Hill Road has a total length of from MD 189 in Potomac to US 1 in College Park.〔 Montrose Road runs from Potomac to Montrose Parkway in North Bethesda.〔 Montrose Road continues east from there, but is bypassed by Montrose Parkway, which has a length of to its eastern end beyond MD 355.〔 Randolph Road spans through Wheaton, Glenmont, Colesville, and Fairland to US 29.〔 The highway continues as Cherry Hill Road for through Calverton to College Park.〔 The vast majority of the highway is maintained by the respective counties, but short segments are maintained by the Maryland State Highway Administration (MDSHA) as unsigned MD 927 and MD 927A in North Bethesda and MD 929 in Fairland.〔 The entire length of the Randolph Road portion of the highway and MD 927A, the portion of Montrose Parkway through the MD 355 interchange, are part of the National Highway System as a principal arterial.〔〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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