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Washington State Route 501

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Title: Washington State Route 501  
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Washington State Route 501

State Route 501 marker

State Route 501
Erwin O. Rieger Memorial Highway
SR 501 is highlighted in red.
Route information
Auxiliary route of I-5
Defined by RCW
Maintained by WSDOT
Length: 13.97 mi[1] (22.48 km)
Existed: 1964[2] – present
Southern section
Length: 11.00 mi[1] (17.70 km)
South end: I‑5 in Vancouver
North end: Ridgefield NWR near Vancouver
Northern section
Length: 2.97 mi[1] (4.78 km)
West end: Main Street in Ridgefield
East end: I‑5 in Ridgefield
Location
Counties: Clark
Highway system
SR 500 SR 502

State Route 501 (SR 501, designated as the Erwin O. Rieger Memorial Highway) is a 13.97-mile-long (22.48 km) state highway in the southern part of the U.S. state of Washington. It is split into two sections in Clark County, a north–south alignment connecting Interstate 5 (I-5) in Vancouver to the Port of Vancouver and the Ridgefield National Wildlife Refuge, and a west–east alignment connecting Ridgefield to I-5. Prior to the 1964 highway renumbering, SR 501 was designated as Secondary State Highway 1T (SSH 1T), established in 1937 and re-aligned to serve the Port of Vancouver in 1963.

Route description

Southern section

The southern terminus of SR 501 at an interchange with I-5 in Downtown Vancouver

The 11.00-mile-long (17.70 km) southern section of SR 501 and the Erwin O. Rieger Memorial Highway begins as the four-lane Mill Plain Boulevard at a diamond interchange with I-5 in Downtown Vancouver.[1][3] The highway travels west through Downtown Vancouver and splits into a one-way pair on 14th Street and 15th Street before rejoining as Mill Plain Boulevard.[4][5] SR 501 crosses a BNSF rail yard and enters the Port of Vancouver, becoming the Lower River Road and narrowing to a two-lane highway on the south side of Vancouver Lake.[6][7][8] The highway follows the Columbia and Lake rivers north past the Shillapoo Wildlife Recreation Area,[9][10] ending south of Post Office Lake in the Ridgefield National Wildlife Refuge.[11][12]

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 the busiest section of SR 501 overall was west of I-5 at C Street, serving 13,000 vehicles, while the least busiest section of SR 501 overall was south of Shillapoo Wildlife Recreation Area, serving 650 vehicles.[13] Between I-5 and the Port of Vancouver, SR 501 is designated as part of WSDOT's Highway of Statewide Significance,[14] which include interstate highways and other principal arterials that are needed to connect major communities in the state of Washington.[15]

Northern section

Looking east at the intersections of Main Avenue and Pioneer Street (SR 501) in Downtown Ridgefield

The 2.97-mile-long (4.78 km) northern section of SR 501 within Ridgefield begins as Pioneer Street at an intersection with Main Street at the Ridgefield City Hall.[1][16] The highway travels east through Downtown Ridgefield, passing View Ridge Middle School, before crossing over Gee Creek.[17][18] SR 501 continues east through two roundabouts, at 45th Street Avenue and 56th Place, before ending at a diamond interchange with I-5.[19][20]

Every year, WSDOT conducts a series of surveys on its highways in the state to measure traffic volume. This is expressed in terms of AADT, which is a measure of traffic volume for any average day of the year. In 2011, WSDOT calculated that the busiest section of the northern section was the I-5 interchange, serving 11,000 vehicles, while the least busiest section was the intersection with Main Street in Downtown Ridgefield, serving 3,200 vehicles.[13]

History

SSH 1T was created in 1937 during the formation of the primary and secondary state highways,[21] traveling on a 18.86-mile-long (30.35 km) route north from Primary State Highway 1 (PSH 1) and U.S. Route 99 (US 99) in Vancouver through Felida and Ridgefield to PSH 1 and US 99 at Pioneer.[22][23] The highway was re-aligned in 1963 to serve the Port of Vancouver, traveling along the Columbia River to Ridgefield west of Vancouver Lake onto a roadway that was to be constructed.[24] SSH 1T became SR 501 during the 1964 highway renumbering and codified as such in 1970,[25][26] being designated as the Erwin O. Rieger Memorial Highway in 1991.[27] As of 2012, the highway between the Ridgefield National Wildlife Refuge and the city of Ridgefield has not been constructed and remains as a physical gap in the state highway system.[28] The interchange between I-5 and SR 501 east of Ridgefield was rebuilt by WSDOT between 2010 and 2012, adding roundabouts at intersections west and east of the interchange as well.[29]

Major intersections

Southern section

The entire highway is in Clark County.
Location Mile[1] km Destinations Notes
Vancouver 0.00–
0.05
0.00–
0.08
I‑5 – Portland, Seattle Interchange
  11.00 17.70 Ridgefield National Wildlife Refuge
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Northern section

The entire highway is in Ridgefield, Clark County.
Mile[1] km Destinations Notes
11.00 17.70 Main Street
13.88–
13.97
22.34–
22.48
I‑5 – Portland, Seattle Interchange
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

  1. ^ a b c d e f g Staff (2012), State Highway Log: Planning Report 2011, SR 2 to SR 971 (PDF),  
  2. ^ "47.17.640: State route No. 501 — Erwin O. Rieger Memorial Highway.",  
  3. ^ SR 5 - Exit 1C: Junction SR 501/Mill Plain Blvd (PDF), Washington State Department of Transportation, May 25, 2011, retrieved February 10, 2013 
  4. ^ SR 501: Junction SR 501 CO VANCVR (PDF), Washington State Department of Transportation, October 3, 2004, retrieved February 10, 2013 
  5. ^ "Feature Detail Report for: Vancouver",  
  6. ^ Washington State Department of Transportation (January 2012) (PDF). 2011 Washington State Rail System (Map). http://wsdot.wa.gov/NR/rdonlyres/FDBE2AB4-E504-4AC5-9E30-6A2CC4FAAD34/0/2011Ownership.pdf. Retrieved February 10, 2013.
  7. ^ "Feature Detail Report for: Port of Vancouver", Geographic Names Information System (United States Geological Survey), September 10, 1979, retrieved February 10, 2013 
  8. ^ "Feature Detail Report for: Vancouver Lake", Geographic Names Information System (United States Geological Survey), September 10, 1979, retrieved February 10, 2013 
  9. ^ "Feature Detail Report for: Shillapoo Wildlife Recreation Area", Geographic Names Information System (United States Geological Survey), May 1, 1991, retrieved February 10, 2013 
  10. ^ "Feature Detail Report for: Lake River", Geographic Names Information System (United States Geological Survey), September 10, 1979, retrieved February 10, 2013 
  11. ^ "Feature Detail Report for: Ridgefield National Wildlife Refuge", Geographic Names Information System (United States Geological Survey), September 10, 1979, retrieved February 10, 2013 
  12. ^ Google Inc. "State Route 501". Google Maps (Map). Cartography by Google, Inc. https://maps.google.com/maps?saddr=E+Mill+Plain+Blvd&daddr=WA-501+N%2FNW+Lower+River+Rd&hl=en&ll=45.686485,-122.71281&spn=0.128314,0.338173&sll=45.736919,-122.752476&sspn=0.03205,0.084543&geocode=FTJHuAIdd02w-A%3BFX72uQIdcuOu-A&mra=dme&mrsp=1&sz=14&t=m&z=12. Retrieved February 10, 2013.
  13. ^ a b Staff (2011), 2011 Annual Traffic Report (PDF), Washington State Department of Transportation, pp. 184–185, retrieved February 10, 2013 
  14. ^ Transportation Commission List of Highways of Statewide Significance,  
  15. ^ Lorenzo, Judy, Highways of Statewide Significance, Washington State Department of Transportation, retrieved February 10, 2013 
  16. ^ "Feature Detail Report for: Ridgefield", Geographic Names Information System (United States Geological Survey), September 10, 1979, retrieved February 10, 2013 
  17. ^ "Feature Detail Report for: View Ridge Middle School", Geographic Names Information System (United States Geological Survey), December 31, 1992, retrieved February 10, 2013 
  18. ^ "Feature Detail Report for: Gee Creek", Geographic Names Information System (United States Geological Survey), September 10, 1979, retrieved February 10, 2013 
  19. ^ SR 5 - Exit 14: Junction SR 501/Pioneer Street (PDF), Washington State Department of Transportation, May 24, 2011, retrieved February 10, 2013 
  20. ^ Google Inc. "State Route 501". Google Maps (Map). Cartography by Google, Inc. https://maps.google.com/maps?saddr=Pioneer+St&daddr=NW+269th+St%2FPioneer+St&hl=en&ll=45.8157,-122.715525&spn=0.032004,0.084543&sll=45.815846,-122.684954&sspn=0.002,0.005284&geocode=FVcWuwId_Aqv-A%3BFTgYuwId8vmv-A&mra=me&mrsp=1,0&sz=18&t=m&z=14. Retrieved February 10, 2013.
  21. ^ Washington State Legislature (March 18, 1937), "Chapter 207: Classification of Public Highways", Session Laws of the State of Washington, Session Laws of the State of Washington (1937 ed.),  
  22. ^ Staff (1960), Annual Traffic Report, 1960 (PDF),  
  23. ^ United States Geological Survey (1949) (JPG). Vancouver, 1949 (Map). 1:250,000. http://www.lib.utexas.edu/maps/topo/250k/txu-pclmaps-topo-us-vancouver-1949.jpg. Retrieved February 10, 2013.
  24. ^ Washington State Legislature (1963), "Extended Session 3", Session Laws of the State of Washington, Session Laws of the State of Washington (1963 ed.), Olympia, Washington: Washington State Legislature 
  25. ^ Prahl, C. G. (December 1, 1965), Identification of State Highways, Washington State Highway Commission, Department of Highways, retrieved February 7, 2013 
  26. ^ United States Geological Survey (1967) (JPG). Vancouver, 1967 (Map). 1:250,000. http://www.lib.utexas.edu/maps/topo/250k/txu-pclmaps-topo-us-vancouver-1967.jpg. Retrieved February 7, 2013.
  27. ^ Washington State Legislature (May 9, 1991), "Chapter 78: House Bill 1946 - Erwin O. Rieger Memorial Highway", Session Laws of the State of Washington, Session Laws of the State of Washington (1991 ed.), Olympia, Washington: Washington State Legislature, retrieved February 10, 2013 
  28. ^ Washington State Department of Transportation (2011) (PDF). Washington State Highways, 2011–2012 (Map). 1:842,000. http://www.wsdot.wa.gov/NR/rdonlyres/14A6187A-B266-4340-A351-D668F89AC231/0/TouristMapFront_withHillshade.pdf. Retrieved February 10, 2013.
  29. ^ Tams, Chris (October 2012), I-5 - SR 501 Ridgefield Interchange - Complete October 2012, Washington State Department of Transportation, retrieved February 10, 2013 

External links

  • Highways of Washington State
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