Maryland Route 175 | ||||
|---|---|---|---|---|
 Maryland Route 175 highlighted in red | ||||
| Route information | ||||
| Maintained by MDSHA | ||||
| Length | 17.01 mi[1] (27.37 km) | |||
| Existed | 1927–present | |||
| Major junctions | ||||
| West end | Little Patuxent Parkway in Columbia | |||
| East end |  MD 3 in Millersville | |||
| Location | ||||
| Country | United States | |||
| State | Maryland | |||
| Counties | Howard, Anne Arundel | |||
| Highway system | ||||
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Maryland Route 175 is a state highway in the U.S. state of Maryland. The highway runs 17.01 miles (27.37 km) 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.