Washington State Route 172

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State Route 172 marker

State Route 172
SR 172 is highlighted in red.
Route information
Auxiliary route of SR 17
Defined by RCW 47.17.355
Maintained by WSDOT
Length: 35.01 mi[2] (56.34 km)
Existed: 1964[1] – present
Major junctions
West end: US 2 at Farmer
East end: SR 17 near Mansfield
Location
Counties: Douglas
Highway system
SR 171 SR 173

State Route 172 (SR 172) is a 35.01-mile (56.34 km) long state highway serving rural Douglas County in the U.S. state of Washington. The highway travels north from U.S. Route 2 (US 2) at Farmer through Withrow and east through Mansfield before ending at SR 17 at Sims Corner. The highway follows the route of a county road built in the 1930s and signed as Secondary State Highway 10B (SSH 10B) in 1955. SSH 10B became SR 172 during the 1964 highway renumbering and served a daily average of less than 700 vehicles in 2011.

Route description[edit]

SR 172 passing through Mansfield as Main Street

SR 172 begins as Road C NW at an intersection with US 2 at the unincorporated community of Farmer, between Waterville and Coulee City.[3] The highway travels north through farmland and serves Withrow before climbing Lone Butte and turning east into 14th Road NW.[2][4][5] SR 172 continues east into Mansfield,[6] where it becomes Main Street and turns southeast into Downtown at Mansfield High School.[7] The roadway turns northeast onto Railroad Avenue, serving the Mansfield Airport.[8] SR 172 leaves Mansfield and continues east as 14th Road NE until it ends at SR 17 at Sims Corner, north of Coulee City.[9][10][11]

Every year the Washington State Department of Transportation (WSDOT) conducts a series of surveys on its highways in the state to measure traffic volume. This is expressed in terms of average annual daily traffic (AADT), which is a measure of traffic volume for any average day of the year. In 2011, WSDOT calculated that between 200 and 690 vehicles per day used the highway, mostly in Mansfield.[12]

History[edit]

A gravel county road extending from Lone Butte through Mansfield to Sims Corner first appeared in a 1933 Department of Highways map of Washington.[13] The road was paved and used temporarily by Primary State Highway 10 (PSH 10) until a BridgeportLeahy road was built to the northeast in the 1950s.[14][15] A paved road from Mansfield to Withrow and Farmer was built by 1950 and was signed as an extension of Secondary State Highway 10B (SSH 10B) in 1955.[16][17] SSH 11B was split into SR 172 and SR 174 in the 1964 highway renumbering,[1][18][19] and no major revisions to the highway has occurred since.[20]

Major intersections[edit]

The entire highway is in Douglas County.

Location mi[2] km Destinations Notes
Farmer 0.00 0.00 US 2 – Coulee City, Waterville Western terminus
35.01 56.34 SR 17 – Coulee City, Bridgeport, Grand Coulee Dam Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References[edit]

  1. ^ a b "47.17.355: State route No. 172", Revised Code of Washington, Washington State Legislature, 1970, retrieved January 15, 2013 
  2. ^ a b c Staff (2012), State Highway Log: Planning Report 2011, SR 2 to SR 971 (PDF), Washington State Department of Transportation, pp. 1164–1167, retrieved January 15, 2013 
  3. ^ "Feature Detail Report for: Farmer", Geographic Names Information System, United States Geological Survey, September 10, 1979, retrieved January 15, 2013 
  4. ^ "Feature Detail Report for: Withrow", Geographic Names Information System, United States Geological Survey, September 10, 1979, retrieved January 15, 2013 
  5. ^ "Feature Detail Report for: Lone Butte", Geographic Names Information System, United States Geological Survey, September 10, 1979, retrieved January 15, 2013 
  6. ^ "Feature Detail Report for: Mansfield", Geographic Names Information System, United States Geological Survey, September 10, 1979, retrieved January 15, 2013 
  7. ^ "Feature Detail Report for: Mansfield High School", Geographic Names Information System, United States Geological Survey, March 1, 1993, retrieved January 15, 2013 
  8. ^ "Feature Detail Report for: Mansfield Airport", Geographic Names Information System, United States Geological Survey, March 1, 1990, retrieved January 15, 2013 
  9. ^ "Feature Detail Report for: Sims Corner", Geographic Names Information System, United States Geological Survey, September 10, 1979, retrieved January 15, 2013 
  10. ^ Google (January 15, 2013). "State Route 172" (Map). Google Maps. Google. Retrieved January 15, 2013. 
  11. ^ Douglas County 2010 Road Atlas (PDF) (Map) (2010 ed.). 1:16,000. East Wenatchee, Washington: Douglas County Transportation & Land Services. April 2010. pp. 111, 119. Retrieved January 15, 2013. 
  12. ^ Staff (2011), 2011 Annual Traffic Report (PDF), Washington State Department of Transportation, p. 152, retrieved January 15, 2013 
  13. ^ Highway Map of the State of Washington (DJVU) (Map). Department of Highways. April 1, 1933. Retrieved January 15, 2013. 
  14. ^ Highways of the State of Washington (DJVU) (Map). Department of Highways. 1939. Retrieved January 15, 2013. 
  15. ^ "Chamber Session Broad in Scope", Spokane Daily Chronicle, Spokane, Washington, April 2, 1949, retrieved January 15, 2013 
  16. ^ Washington State Legislature (1955), Session Laws of the State of Washington, Session Laws of the State of Washington (1955 ed.), Olympia, Washington: Washington State Legislature 
  17. ^ Ritzville, 1953 (JPG) (Map). 1:250,000. United States Geological Survey. 1953. Retrieved January 15, 2013. 
  18. ^ Prahl, C. G. (December 1, 1965), Identification of State Highways (PDF), Washington State Highway Commission, Department of Highways, retrieved January 15, 2013 
  19. ^ Ritzville, 1965 (JPG) (Map). 1:250,000. United States Geological Survey. 1965. Retrieved January 14, 2013. 
  20. ^ Washington State Highways, 2011–2012 (PDF) (Map). 1:842,000. Washington State Department of Transportation. 2011. Retrieved January 15, 2013. 

External links[edit]

Route map: Google

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