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County State-Aid Highway 21 (Polk County, Minnesota)

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County State-Aid Highway 21 marker

County State-Aid Highway 21
Center Street
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CSAH 21 highlighted in red
Route information
Length25.591 mi (41.185 km)
Major junctions
West end CSAH 64 in Grand Forks Township
 
East end CSAH 3 at PolkPennington county line
Highway system
County Roads in Polk County
Inter-County Highways

County State-Aid Highway 21 (CSAH 21) is a regional county highway in Polk County, Minnesota, which runs from its intersection with CSAH 64 in Grand Forks Township to the Polk–Pennington county line, where it continues on as CSAH 3 in Pennington County.[1] This route also carries the name Center Street. The roads of Polk County are laid out in a grid formation, and while many of them are interrupted by various rivers, bridges, and trails, CSAH 21 runs across the northern part of the county uninterrupted, save for stop signs at MN 220 and US 75. CSAH 21 is 25.591 miles (41.185 km) in length.

Route description[edit]

CSAH 21 serves as an east–west route running across northwestern Polk County, passing through the townships of Grand Forks, Sullivan, Keystone, and Euclid. The unincorporated community of Sherack is located on the route in Keystone Township. It is a major connector between the Greater Grand Forks area and the Thief River Falls area, in addition to rural Pennington County. The route traverses through very flat terrain, and carries a speed limit of 60 miles per hour (97 km/h) for the majority of its duration, except for a 45-mile-per-hour (72 km/h) zone through Sherack.

Functional classification[edit]

CSAH 21 is classified as:[2]

Minor Collector: CSAH 64 to MN 220
Minor Arterial: MN 220 to Polk-Pennington county line

Road restrictions[edit]

CSAH 21 has road restrictions of:[3]

10-ton: MN 220 to Polk-Pennington county line

Major intersections[edit]

LocationmikmDestinationsNotes
Grand Forks Township0.0000.000 CSAH 64 (Center Street W, 460th Avenue SW)Western terminus; roadway continues west as CSAH 64
1.0001.609 MN 220 – Grand Forks, Alvarado, Oslo
Sullivan Township5.0708.159 CSAH 62 north (410th Avenue NW)
7.00011.265 CSAH 66 south (390th Avenue SW)Western end of CSAH 66 concurrency
7.08011.394 CSAH 66 north (390th Avenue NW)Eastern end of CSAH 66 concurrency
Keystone Township11.95019.232 CSAH 20 south (340th Avenue SW)Western end of CSAH 20 concurrency
12.08019.441 CSAH 20 north (340th Avenue NW)Eastern end of CSAH 20 concurrency
Euclid Township17.34027.906 US 75 – Euclid, Angus
PolkPennington
county line
25.59141.185 CSAH 3 east (Center Street W) – St. HilaireEastern terminus; continuation into Pennington County
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References[edit]

  1. * Office of Transportation System Management (2018). General Highway Map, Polk County (PDF) (Map). Saint Paul: Minnesota Department of Transportation.
  2. Polk County Functional Classification Map 2015 (PDF)
  3. 2019 Road Restrictions Map (PDF)

External links[edit]

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