Maryland Route 189
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| Falls Road | ||||
Maryland Route 189 highlighted in red
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| Route information | ||||
| Maintained by MDSHA | ||||
| Length: | 5.05 mi (8.13 km) | |||
| Existed: | 1927 – present | |||
| Major junctions | ||||
| South end: |
 MD 190 in Potomac
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 I-270 in Rockville
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| North end: | Great Falls Road / Maryland Avenue in Rockville | |||
| Location | ||||
| Counties: | Montgomery | |||
| Highway system | ||||
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Maryland Route 189 (MD 189) is a state highway in the U.S. state of Maryland. Known as Falls Road, the highway runs 5.05 miles (8.13 km) from MD 190 in Potomac to Great Falls Road and Maryland Avenue in Rockville. MD 189 connects Rockville with Potomac and the Great Falls of the Potomac River in southwestern Montgomery County. The highway was constructed from Rockville to Potomac by the early 1920s and extended toward Great Falls in the early 1930s. MD 189 was expanded to a divided highway around its newly constructed interchange with Interstate 270 (I-270) in the late 1980s. The highway was truncated at both ends in the late 1990s.
MD 189 begins at an intersection with MD 190 (River Road) in the village center of Potomac. Falls Road continues south as a county highway to MacArthur Boulevard and the entrance to the Chesapeake and Ohio Canal National Historical Park, which includes the Great Falls of the Potomac. MD 189 heads north as a two-lane road that passes through several sharp curves between the Bullis School and the Falls Road Golf Course. The highway meets the western end of Montrose Road shortly before entering the city of Rockville. MD 189 expands to a four-lane divided highway ahead of its intersection with Wootton Parkway. The highway continues through a single-point urban interchange with I-270 (Eisenhower Memorial Highway) shortly before reaching its northern terminus at a four-way intersection with Great Falls Road, Maryland Avenue, and Potomac Valley Road. Great Falls Road heads north toward the west end of downtown Rockville and Maryland Avenue heads northeast directly toward downtown.
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