Washington State Route 509

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State Route 509 marker

State Route 509

Map
SR 509 highlighted in red
Route information
Auxiliary route of I-5
Maintained by WSDOT
Length35.17 mi[1] (56.60 km)
Existed1964[2]–present
Major junctions
South end I-705 in Tacoma
Major intersections SR 99 in Federal Way
SR 516 in Des Moines
SR 518 in Burien
North end SR 99 in Seattle
Location
CountryUnited States
StateWashington
CountiesPierce, King
Highway system
← SR 508→ SR 510

State Route 509 (SR 509) is a 35.17-mile-long (56.60 km)

limited-access highway near the Port of Tacoma
and from Burien to its northern terminus in Seattle.

Prior to the

21st Street Bridge. A freeway extension of SR 509 within the city of SeaTac, connecting the Burien Freeway to I-5
, is planned to be completed by 2028.

Route description

21st Street Bridge within Tacoma, connecting downtown to the Port of Tacoma
.

SR 509 begins as South 21st Street at a

Highline Community College to an intersection with SR 516 in western Kent. SR 509 turns west to form a concurrency with SR 516, heading past Mount Rainier High School and into Des Moines, where SR 516 ends.[10]

SR 509 continues north onto Marine View Drive through the city of

Duwamish Waterway.[17][18] The roadway continues north as the SR 99 divided highway toward downtown Seattle and the Alaskan Way Viaduct.[1][10]

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 annual average 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 509 was the limited-access highway between Burien and its northern terminus in Seattle, serving 54,000 vehicles, while the least busiest section was within Dash Point and Dash Point State Park, serving 2,600 vehicles.[19] SR 509 between SeaTac and Seattle is designated as part of the National Highway System,[20] which includes roadways important to the national economy, defense, and mobility.[21] The highway from Tacoma to Federal Way and from SeaTac to Seattle are designated as part of WSDOT's Highways of Statewide Significance,[22][23] which includes highways that connect major communities in the state of Washington.[24]

History

The northern terminus of SR 509, at an interchange with SR 99 constructed in the 1990s

The present route of SR 509 from

1964 highway renumbering to become SR 509 and was codified into law in 1970.[2][33][34]

The Des Moines–Burien Freeway was approved by the

Washington State Highway Commission in 1966, as part of a longer freeway corridor connecting the ports of Tacoma and Seattle.[35] An earlier proposal from 1967 to connect the north end of SR 509 to I-5 via an expressway on Michigan Street and a new crossing of the Duwamish River was studied but was never built.[36] SR 509 was realigned onto the newly constructed Burien Freeway in November 1968,[37] extending from Seattle to SeaTac.[38][39] The highway was originally routed through Saltwater State Park on Marine View Drive until 1991, when SR 509 was moved to two concurrencies with SR 99 in Federal Way and SR 516 in Des Moines.[2]

The freeway was planned to be extended south to SR 516 in the 1970s after a 4-mile (6.4 km)

right-of-way was acquired by WSDOT before the project was canceled due to public opposition.[40] The King County Department of Public Works recommended extending SR 509 southeast from South 188th Street to I-5 in 1988, with construction planned to begin in 1999 at an estimated cost of $252 million in 1996,[39][41] raised to $1.4 billion a decade later.[42] A freeway bypass of the Port of Tacoma for SR 509 was proposed in 1990 as a supplement to the newly completed I-705 and funded with a $180 million grant from the Federal Highway Administration approved the following year.[43] Construction began in early 1994 amid controversy over the freeway's effects on the redevelopment of the Thea Foss Waterway.[44][45] The first section of the new freeway opened in August 1995, while the cable-stayed bridge over the Thea Foss Waterway and single-point urban interchange with I-705 opened on January 22, 1997.[46][47] The project cost a total of $165.3 million to construct, with the majority of funds from the federal government and a land claims settlement with the Puyallup Tribe.[47] The Blair Bridge was closed and demolished to make way for a wider channel on the Blair Waterway for larger container ships.[48]

As part of the Puget Sound Gateway Program approved in 2015, WSDOT plans to build a freeway extension of SR 509 around the south side of Seattle–Tacoma International Airport and a spur freeway near the Port of Tacoma.[49] The projects, together with an extension of State Route 167, are anticipated to cost $2 billion and were originally proposed in the mid-20th century. Land acquisition was completed between 1969 and 1980 for a similar extension through Des Moines, but local opposition prevent its construction.[50] The three-mile (4.8 km) extension near SeaTac and a new interchange with I-5 began construction in November 2021 and is scheduled to be completed by 2028 in three stages.[51][52] The first major stage, construction of the I-5 interchange and SR 99 overpass, is scheduled to be completed in 2025.[53] The Port of Tacoma project would also open in 2028, constructing a new diverging diamond interchange with I-5 near Fife for the extended SR 167 and a short freeway designated as SR 509 Spur.[54][55] The SR 509 expansion was initially planned in the early 1990s and had funding approved by the legislature in 1998, but it was cancelled by later ballot measures.[56]

Major intersections

CountyLocationmi[1]kmDestinationsNotes
Seattle, Portland
Western terminus, interchange
0.06–
0.25		0.097–
0.40
21st Street Bridge
South end of freeway
0.51–
0.71		0.82–
1.14		Portland AvenueNorthbound exit and southbound entrance
1.66–
2.80		2.67–
4.51		Port of Tacoma Road
North end of freeway
KingFederal Way17.4828.13
 SR 99 south (Pacific Highway)		South end of SR 99 overlap
Kent21.5834.73


 SR 99 north / SR 516 east to I-5 – SeaTac		North end of SR 99 overlap, south end of SR 516 overlap
Des Moines23.3737.61Marine View DriveNorth end of SR 516 overlap
SeaTac28.05–
28.47		45.14–
45.82		Des Moines Memorial Drive / South 188th Street
South end of freeway
28.85–
28.99		46.43–
46.65		South 176th Street
29.16–
29.88		46.93–
48.09		South 160th Street
Burien30.07–
30.70		48.39–
49.41


 SR 518 east to I-5 / I-405 / Southwest 148th Street – Sea-Tac
30.93–
31.02		49.78–
49.92		South 146th StreetNorthbound entrance and southbound exit
31.43–
32.07		50.58–
51.61		South 128th Street
32.89–
33.11		52.93–
53.29		South 112th Street / 5th Avenue South / Glendale Way SouthNorthbound entrance and southbound exit
Seattle
34.03–
34.73		54.77–
55.89		Cloverdale Street / Myers Way – South Park, White Center
35.12–
35.17		56.52–
56.60		 SR 99 (West Marginal Way)Northern terminus, continues as SR 99
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

  1. ^ a b c Staff (2012). "State Highway Log: Planning Report 2012, SR 2 to SR 971" (PDF). Washington State Department of Transportation. pp. 1549–1563. Retrieved February 26, 2013.
  2. ^ a b c "47.17.680: State route No. 509". Revised Code of Washington. Washington State Legislature. 1991 [1970]. Retrieved February 26, 2013.
  3. ^ "SR 705: Junction SR 509/Pacific Avenue" (PDF). Washington State Department of Transportation. June 12, 2009. Retrieved February 26, 2013.
  4. ^ Campus map and directory (PDF) (Map). University of Washington Tacoma. September 2012. Retrieved February 26, 2013.
  5. ^ "SR 509: Junction Portland Avenue" (PDF). Washington State Department of Transportation. October 3, 2004. Retrieved February 26, 2013.
  6. ^ 2011 Washington State Rail System (PDF) (Map). Washington State Department of Transportation. January 2012. Retrieved February 26, 2013.
  7. ^ "SR 509: Junction Milwaukee Way/Port of Tacoma Road" (PDF). Washington State Department of Transportation. October 3, 2004. Retrieved February 26, 2013.
  8. Washington State Parks
    . January 11, 2011. Retrieved February 26, 2013.
  9. ^ a b Google (February 26, 2013). "State Route 509" (Map). Google Maps. Google. Retrieved February 26, 2013.
  10. ^ "SR 509: Junction Des Moines Way South/South 188th Street" (PDF). Washington State Department of Transportation. August 1, 2011. Retrieved February 26, 2013.
  11. ^ "SR 509: Junction South 176th Street" (PDF). Washington State Department of Transportation. August 2, 2011. Retrieved February 26, 2013.
  12. ^ "SR 509: Junction South 160th Street" (PDF). Washington State Department of Transportation. August 1, 2011. Retrieved February 26, 2013.
  13. ^ "SR 509: Junction SR 518/South 146th Street" (PDF). Washington State Department of Transportation. June 1, 2011. Retrieved February 26, 2013.
  14. ^ "SR 509: Junction South 128th Street" (PDF). Washington State Department of Transportation. October 19, 2010. Retrieved February 26, 2013.
  15. ^ "SR 509: Junction South 112th Street" (PDF). Washington State Department of Transportation. October 1, 2004. Retrieved February 26, 2013.
  16. ^ "SR 509: Junction South Cloverdale Street" (PDF). Washington State Department of Transportation. May 2, 2011. Retrieved February 26, 2013.
  17. ^ "SR 99: Junction SR 509" (PDF). Washington State Department of Transportation. March 31, 2011. Retrieved February 26, 2013.
  18. ^ Staff (2011). "2011 Annual Traffic Report" (PDF). Washington State Department of Transportation. pp. 190–191. Retrieved February 26, 2013.
  19. ^ National Highway System: Seattle, WA (PDF) (Map). Federal Highway Administration. October 1, 2012. Retrieved February 26, 2013.
  20. ^ "What is the National Highway System?". Federal Highway Administration. September 26, 2012. Retrieved February 26, 2013.
  21. Washington State Transportation Commission. July 26, 2009. Archived from the original
    (PDF) on July 24, 2013. Retrieved February 26, 2013.
  22. ^ Highways Of Statewide Significance (PDF) (Map). Washington State Department of Transportation. 2009. Retrieved February 26, 2013.
  23. ^ Lorenzo, Judy. "Highways of Statewide Significance". Washington State Department of Transportation. Retrieved February 26, 2013.
  24. ^ Washington: Tacoma Quadrangle (JPG) (Map). 1:250,000. United States Geological Survey. March 1900. Retrieved February 26, 2013.
  25. ^ Washington State Legislature (March 19, 1923). "Chapter 185: Primary and Secondary State Highways". Session Laws of the State of Washington (1923 ed.). Olympia, Washington: Washington State Legislature. pp. 627–628. Retrieved February 26, 2013.
  26. ^ Washington State Legislature (March 17, 1937). "Chapter 190: Establishment of Primary State Highways". Session Laws of the State of Washington (1937 ed.). Olympia, Washington: Washington State Legislature. p. 933. Retrieved February 26, 2013.
  27. ^ Washington State Legislature (March 18, 1937). "Chapter 207: Classification of Public Highways". Session Laws of the State of Washington (1937 ed.). Olympia, Washington: Washington State Legislature. pp. 996, 998. Retrieved February 26, 2013.
  28. ^ Long, Priscilla (September 6, 2003). "Tacoma's Eleventh Street (City Waterway) Bridge opens on February 15, 1913". HistoryLink. Retrieved February 26, 2013.
  29. ^ Long, Priscilla (June 7, 2008). "Tacoma's Blair Bridge is closed and demolition begins on January 23, 1997". HistoryLink. Retrieved February 26, 2013.
  30. ^
    Department of Highways. pp. 156, 162. Archived from the original
    (PDF) on March 13, 2011. Retrieved February 26, 2013.
  31. ^ a b Seattle, 1958 (JPG) (Map). 1:250,000. United States Geological Survey. 1958. Retrieved February 26, 2013.
  32. ^ Prahl, C. G. (December 1, 1965). "Identification of State Highways" (PDF). Washington State Highway Commission, Department of Highways. Retrieved February 26, 2013.
  33. ^ Seattle, 1965 (JPG) (Map). 1:250,000. United States Geological Survey. 1965. Retrieved February 26, 2013.
  34. Newspapers.com
    .
  35. ^ "Expressway-Link Need Cited". The Seattle Times. March 6, 1967. p. 24.
  36. ^ "Slide Blocks Two Lanes of Freeway". The Spokesman-Review. December 25, 1968. p. 3. Retrieved February 26, 2013.
  37. ^ Barr, Robert A. (November 14, 1968). "Burien Freeway Section to Open". The Seattle Times. p. 67.
  38. ^ a b Stern, Stephan (December 17, 1990). "State looks again at extending Highway 509". The Seattle Times. Retrieved February 26, 2013.
  39. ^ "Freeway Fight: Des Moines, Federal Way Continuing Their Battle Against Highway 509". The Seattle Times. August 24, 1969. p. 4.
  40. ^ Ervin, Keith. "Transit Plan: What Others Want—RTA foes say our future is freeways". The Seattle Times. Retrieved February 26, 2013.
  41. ^ Lindblom, Mike. "Highway projects' costs rise sharply". The Seattle Times. Retrieved February 26, 2013.
  42. ^ "Federal money approved for new Tacoma freeway". The Seattle Times. February 17, 1991. p. B6.
  43. ^ Turner, Joseph (April 1, 1994). "Ceremonial send-off: Dignitaries dig in for 509 groundbreaking". The News Tribune. p. A1.
  44. ^ Tucker, Rob (March 29, 1994). "New freeway called barrier to progress on waterway". The News Tribune. p. A1.
  45. ^ Turner, Joseph (August 1, 1995). "Tideflats freeway opening could entice little use". The News Tribune. p. B1.
  46. ^ a b Gibbs, Al (January 23, 1997). "'A new landmark': Span over Thea Foss Waterway opens". The News Tribune. p. A1.
  47. ^ Gibbs, Al (January 19, 1997). "The commute just won't be the same: With the opening of the 509 corridor, the Blair Bridge is set for demolition". The News Tribune. p. B1.
  48. ^ Schrader, Jordan (December 5, 2015). "Decadeslong wait on SR 167 nearing an end". The News Tribune. Retrieved July 9, 2020.
  49. ^ Foster, George (February 11, 2002). "The I-5 connection is waiting on money". Seattle Post-Intelligencer. p. A1. Archived from the original on February 25, 2002. Retrieved June 29, 2023.
  50. ^ Hunter, Steve (November 15, 2021). "Work to connect SR 509 and I-5 starts at Kent intersection". Kent Reporter. Retrieved November 17, 2022.
  51. ^ Minnick, Benjamin (October 3, 2019). "$1.96B Puget Sound Gateway starts, will upgrade highways 167 and 509". Seattle Daily Journal of Commerce. Retrieved November 17, 2022.
  52. ^ "Puget Sound Gateway Program: SR 509 Completion Project – Stage 1b Fact Sheet" (PDF). Washington State Department of Transportation. August 2019. Retrieved November 22, 2022.
  53. ^ Peterson, Josephine (June 22, 2020). "Federal funding for construction on highways 167 and 509 aims to reduce local traffic". The News Tribune. Retrieved July 9, 2020.
  54. ^ "Puget Sound Gateway Program: Construction and Implementation Plan" (PDF). Washington State Department of Transportation. September 2018. pp. 13–14. Retrieved July 9, 2020.
  55. ^ Corvin, Aaron (January 16, 2001). "A quicker trip to Sea-Tac?". The News Tribune. p. A1.

External links

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