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Maryland Route 175 is a state highway in the U.S. state of Maryland. The highway runs from Little Patuxent Parkway in Columbia east to MD 3 in Millersville. MD 175 is a major highway through the large unincorporated community of Columbia; the highway connects U.S. Route 29 (US 29) next to Columbia Town Center with Interstate 95 (I-95) and an industrial area on the eastern side of Howard County. MD 175 also connects Fort Meade with Jessup and Odenton in western Anne Arundel County, where it links MD 295 and MD 32 with the eastern part of the U.S. Army base. MD 175 was constructed from Ellicott City to Millersville in the late 1920s and early 1930s as part of three routes: MD 531 from MD 103 near Ellicott City to US 1 near Jessup, MD 175 from there to Fort Meade and north to Hanover, and MD 180 from Odenton to Millersville. The highway did not originally extend through Fort Meade; MD 175 was constructed through the military installation in the early 1940s as part of major upgrades to the highway from Jessup to Odenton due to its strategic importance. By 1946, MD 175 extended from Ellicott City to Millersville. The highway was widened from Odenton to Millersville in the late 1940s and from Ellicott City to Odenton in the mid-1950s. MD 175 was relocated at I-95 around 1970 and as a major highway through the newly constructed community of Columbia in the mid-1970s. The old portion of the highway from Ellicott City to the new highway became MD 108 and MD 104. There are plans to expand MD 175 to a multi-lane divided highway through Fort Meade due to increased activity at the Army post. ==Route description== MD 175 begins just west of its bridges over the Little Patuxent River. The highway continues southwest as Little Patuxent Parkway, the county-maintained six-lane divided highway that forms the main street of Columbia Town Center. MD 175 heads east as Rouse Parkway, a four-lane divided controlled access highway; the highway was renamed from Little Patuxent Parkway to honor Columbia founder James Rouse and his wife Patty in 2006.〔 The highway immediately has a cloverleaf interchange with US 29 (Columbia Pike). MD 175 heads southeast through intersections with Thunder Hill Road, Tamar Drive, and Dobbin Road as it passes between the Columbia villages of Oakland Mills to the southwest and Long Reach to the northeast. The state highway expands to six lanes at Dobbin Road and has a partial cloverleaf interchange with Snowden River Parkway and a trumpet interchange with Columbia Gateway Drive. Access from eastbound MD 175 to Columbia Gateway Drive requires using the Snowden River Parkway interchange. MD 175 widens to eight lanes at Columbia Gateway Drive, a width the highway carries through its intersection with the eastern end of MD 108 (Waterloo Road) to the highway's partial cloverleaf interchange with I-95. The highway's name changes from Rouse Parkway to Waterloo Road at the MD 108 junction. MD 175 has six lanes from I-95 to east of its junction with US 1 (Washington Boulevard), which was the site of a tavern called Waterloo and before that Spurrier's Tavern.〔〔 MD 175 drops to two lanes as it passes between the Maryland Wholesale Produce Distribution Center to the southwest and the Patuxent Institution on the northeast and enters Jessup. East of Dorsey Run Road, which leads to the Jessup Auto Distribution Center, the state highway crosses over CSX's Capital Subdivision and enters Anne Arundel County, where the highway's name changes to Jessup Road. East of the tracks, MD 175 meets the eastern end of unsigned MD 723 (Old Jessup Road), which accesses the Jessup station on MARC's Camden Line, which uses the Capital Subdivision tracks. The highway continues east past the former Maryland House of Correction and has a cloverleaf interchange with MD 295 (Baltimore–Washington Parkway), where the highway's name becomes Annapolis Road. MD 175 temporarily expands to four lanes at its intersection with MD 713, which heads south as Rockenbach Road into Fort Meade and north as Ridge Road toward Hanover. The highway passes through the eastern part of Fort Meade and expands to a four-lane road with center turn lane at Reece Road, which becomes MD 174 on the eastern boundary of the military installation.〔〔 At the southeastern corner of the fort, MD 175 has a partial cloverleaf interchange with MD 32 (Patuxent Freeway) and enters Odenton. The highway crosses over the Amtrak Northeast Corridor and meets the southern end of MD 170 (Telegraph Road); the south leg of the intersection, Piney Orchard Parkway, leads to the Odenton station on MARC's Penn Line, which uses the Amtrak tracks. MD 175 continues as a four-lane undivided highway to a five-legged roundabout at the eastern end of Odenton where the highway meets Odenton Road, Higgins Drive, and Sappington Station Road, which is unsigned MD 32AA. The highway continues as a two-lane road past Arundel High School and through the village of Gambrills before reaching its eastern terminus at MD 3 (Robert Crain Highway) west of Millersville. MD 175 has separate intersections with southbound and northbound MD 3; Millersville Road continues east from the northbound intersection through the eponymous village and past the historic Childs Residence.〔〔 MD 175 is a part of the National Highway System as an intermodal freight transport connector from I-95 to Dorsey Run Road in Jessup and as a principal arterial from US 29 to I-95 through Columbia.〔〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Maryland Route 175」の詳細全文を読む スポンサード リンク
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