Washington State Route 520: Difference between revisions

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* A flyover ramp from westbound SR-520 to southbound [[Interstate 405 (Washington)|Interstate 405]] is currently deferred due to lack of construction funds.
* A flyover ramp from westbound SR-520 to southbound [[Interstate 405 (Washington)|Interstate 405]] is currently deferred due to lack of construction funds.
* The Sound Transit 2 proposal would add a Bus Rapid Transit (BRT) line to the entire SR-520 corridor, and a light rail extension joining the corridor in the vicinity of Overlake, continuing to the Overlake Transit Center on the [[Microsoft]] campus.
* The Sound Transit 2 proposal would add a Bus Rapid Transit (BRT) line to the entire SR-520 corridor, and a light rail extension joining the corridor in the vicinity of Overlake, continuing to the Overlake Transit Center on the [[Microsoft]] campus.

==Ghost ramps==
[[File:SR 520 Ghost Ramp.jpg|right|thumb|Ghost Ramps at SR-520]]
SR 520 has a set of ghost ramps in the marshlands of Washington Park Arboretum. They are often referred to as "ramps to nowhere". However, one ramp is currently used for the on ramp to SR 520 Eastbound. The others are unused. They were originally part of a plan to build the [[R. H. Thomson Expressway]] which would have cut through the arboretum and down through Seattle towards the I-90/I-5 interchange. Citizens rallied a freeway revolt against the plan on May 4, 1969. Construction near the Arboretum later continued but citizen protest eventually won out and the plan was dropped in 1971.

The [[Freeway and expressway revolts|freeway revolt]] that stopped the R. H. Thomson Expressway had its origins in opposition to SR 520 itself. Architect Victor Steinbrueck, writing in 1962, objected to the "naked brutality of unimaginative structures such as this proposed crossing of Portage Bay, which eliminates fifty houseboats while casting its shadow and noise across this tranquil boat haven."<ref>Victor Steinbrueck, ''Seattle Cityscape'', [[University of Washington Press]], Seattle, 1962, p. 132.</ref>

In 2013 the [[Washington State Department of Transportation]] announced plans to dismantle the ghost ramps.<ref>{{cite web|url=http://seattletimes.com/html/localnews/2020208721_520arboretumxml.html |title=Archived copy |accessdate=March 13, 2013 |deadurl=yes |archiveurl=https://web.archive.org/web/20130203221639/http://seattletimes.com/html/localnews/2020208721_520arboretumxml.html |archivedate=February 3, 2013 }}</ref> To commemorate the ramps and protest their demolition, a local art collective created an [[installation art|installation]], ''Gate to Nowhere'', on one of the ramps in 2014.<ref>{{cite news |last=Graves |first=Jen |title=The Arboretum’s Ramps to Nowhere |url=http://www.thestranger.com/seattle/the-arboretums-ramps-to-nowhere/Content?oid=19885730 |newspaper=The Stranger |location=Seattle |date=June 18, 2014}}</ref><ref>{{cite news |title=A Doomed Seattle Freeway Ramp Gets a Loving Goodbye |first=John |last=Metcalfe |date=July 18, 2014 |url=http://www.citylab.com/design/2014/07/a-doomed-seattle-freeway-ramp-gets-a-loving-goodbye/374652/ |work=CityLab |publisher=The Atlantic Monthly Group}}</ref> The piece consists of a layer of reflective [[acrylic resin|acrylic]] wrapping a pair of support columns.<ref>{{cite news |first=Danielle |last=Palmer-Friedman |date=July 16, 2014 |title=Ozymandias, ramp of ramps |url=http://www.dailyuw.com/features/article_f2d5429a-e082-5d82-a84c-9024d7cc9362.html |newspaper=[[The Daily of the University of Washington]]}}</ref>

In the spring of 2016, some of the SR 520 ghost ramps have begun to be dismantled to make way for the construction of a new causeway linking the new floating bridge to the mainland.


==Exit list==
==Exit list==

Revision as of 05:53, 1 September 2017

State Route 520 marker

State Route 520

Map of Seattle and the Eastside, with SR 520 highlighted in red
Route information
Auxiliary route of I-5
Maintained by WSDOT
Length12.82 mi[1] (20.63 km)
Existed1964[2]–present
Major junctions
West end I-5 in Seattle
Major intersections I-405 in Bellevue
East end SR 202 in Redmond
Location
CountryUnited States
StateWashington
CountiesKing
Highway system
← SR 519→ SR 522

State Route 520 (SR 520) is a

Evergreen Point Floating Bridge, which crosses Lake Washington. SR 520 intersects several state highways, including Interstate 5 (I-5) in Seattle, Interstate 405 (I-405) in Bellevue, and SR 202
in Redmond.

Cross-lake travel was originally facilitated by

bedroom community. SR 520 was designated in 1964 as a freeway connecting I-5 to I-405, while an extension to Redmond was proposed later in the decade. In the 1970s and 1980s, sections of the freeway between Bellevue
and Redmond were opened to traffic, replacing the temporary designation of State Route 920 (SR 920).

Since the 1990s, SR 520 has been expanded with high-occupancy vehicle lanes (HOV lanes) and new interchanges to serve the Overlake area. The original Evergreen Point Floating Bridge was replaced in 2016 by a wider bridge, as part of a multi-billion dollar expansion program that is scheduled to be completed in the 2020s. The program also includes the construction of new bus infrastructure at Montlake and on the Eastside, as well as a bicycle and pedestrian path along most of the highway's length.

Route description

SR 520 eastbound approaching SR 202 in Downtown Redmond

SR 520 begins at an interchange with Interstate 5 (I-5) in northern Seattle near Roanoke Park. The interchange provides access to both directions of I-5 as well as a westbound offramp to Harvard Avenue and Roanoke Street.[3] SR 520 travels east across the south end of Portage Bay and its wetlands on the Portage Bay Viaduct, entering the Montlake neighborhood. In Montlake, the highway intersects Montlake Boulevard (SR 513) and Lake Washington Boulevard just south of the University of Washington campus and Husky Stadium. The freeway continues east on a causeway through the marshlands of Union Bay and Foster Island, at the north end of the Washington Park Arboretum. It passes through a second interchange with Lake Washington Boulevard, which includes several "ghost ramps" that were planned for the cancelled R.H. Thomson Expressway.[4][5]

From Seattle, SR 520 crosses

arc, passing through the Yarrow Point lid and bus station. The freeway enters Bellevue, intersecting I-405 and crossing over the Eastside Rail Corridor. SR 520 continues along the north side of the Bel-Red industrial area and enters the Overlake area of Redmond.[4]

Within Overlake, SR 520 turns north and passes through several

collector–distributor lanes, separated from other lanes by a concrete barrier.[7] The freeway crosses the Sammamish River and turns east, passing to the south of the Redmond Town Center mall and Bear Creek and to the north of Marymoor Park. East of downtown Redmond, SR 520 intersects SR 202 and terminates; the road continues north as Avondale Road towards Cottage Lake.[4]

The SR 520 corridor is served by

shared-use trail for bicycles and pedestrians.[11][12]

The entire route of SR 520 is designated as part of the

average annual daily traffic. In 2016, WSDOT calculated that 80,000 vehicles used SR 520 near its interchange with SR 202 in Redmond and 47,000 vehicles used it at SR 513 in Seattle, the highest and lowest traffic counts along the highway, respectively.[17]

History

Ferries and proposed floating bridge

Settlements along the eastern shore of

bedroom communities in the 1940s and 1950s;[20] the bridge also replaced the ferry system, which ceased operation in 1950, shortly after the removal of tolls on the bridge.[21][22]

In the late 1940s, the state government conducted a feasibility study for a second floating bridge across Lake Washington, in response to increased traffic on the bridge.

Naval Air Station Sand Point.[27] The state government initially chose the Montlake–Evergreen Point alignment in 1954, intending to begin construction in 1955,[28] but the alignment dispute delayed a final decision until December 1956.[29][30] Citizen groups from the Montlake area protested the decision, but were largely ignored by the project's citizen committee.[31]

Opening of floating bridge and freeway

SR 520 under construction in 1963, pictured east of Montlake Boulevard

Construction of the

Secondary State Highway 2A in southern Houghton, and Northup Way, which continued east towards Redmond.[36][37] The Evergreen Point Floating Bridge opened on August 28, 1963, along with the Roanoke Expressway, part of the Seattle Freeway, and the eastern approach to Houghton and Bellevue at a temporary interchange with 104th Avenue Northeast.[30][38][39] The bridge and its approaches, constituting a state highway, were re-designated as State Route 520 under the new state highway numbering system adopted in 1964.[40][41] SR 520 would use a temporary route on local roads between Bellevue and SR 202 in Redmond until the planned freeway was completed by the late 1970s.[42][43]

Extension to Redmond

The Northup Interchange, where SR 520 intersects I-405, was opened on November 22, 1966.[44] The highway was also extended east from 104th Avenue Northeast to 124th Avenue Northeast, serving the Bel-Red industrial area. The state government announced plans in 1968 to begin construction on the remaining freeway to Redmond, via a northeastward course through the Overlake area and across Marymoor Park.[45] Construction of a 1.3-mile-long (2.1 km) segment between 124th Avenue Northeast and 148th Avenue Northeast in Overlake began in February 1972 and was completed in December 1973.[46][47]

The planned route of SR 520 along the north side Marymoor Park in Redmond was given the temporary designation of SR 920 in 1975.

SR 901) and SR 202, was opened in July 1977 after several months of construction.[49][50] Completion of the "missing link" on SR 520, between 148th Avenue Northeast and SR 920, was given prioritization by Eastside cities and groups in the mid-1970s.[51] The City of Bellevue, however, requested that the state government build a reversible bus lane on the Evergreen Point Floating Bridge before completing the "missing link", due to increased traffic on the bridge;[52] the City of Redmond opposed the request, leading to a dispute between the two cities that was later resolved with a compromise to place completion of SR 520 ahead of the bus lane.[53]

The state government approved funding for the SR 520 project in 1977, using part of a statewide

U.S. District judge ruled in favor of the state government in March 1979, allowing for the bid to be awarded to a contractor.[56] The 2.3-mile (3.7 km) segment was completed in December 1981.[57][58] The SR 920 designation was removed from the state highway system in 1985, and re-signed as part of SR 520.[59] A traffic signal at the intersection of SR 520 and Northeast 51st Street remained in place until 1986, when it was replaced with an interchange.[60][61]

Freeway widening and new interchanges

The completion of SR 520 spurred new development in Downtown Redmond and the Overlake area, contributing to major traffic congestion on the freeway.

collector–distributor lanes and ramp meters.[67][68]

In the late 2000s, WSDOT completed several highway improvement projects on the segment of SR 520 between West Lake Sammamish Parkway and SR 202 in Downtown Redmond. In August 2008, a flyover ramp from westbound SR 202 to westbound SR 520 was opened to traffic, replacing a pair of onramp traffic signals.[69][70] SR 520 was widened to four lanes in each direction in 2010, in a multi-phase project that added HOV lanes and merge lanes, as well as reconstructed ramps at West Lake Sammamish Parkway.[71][72][73] In addition to the Downtown Redmond projects, a new lid-like overpass at Northeast 36th Street in Overlake was opened in 2010 to improve traffic in the area. The overpass's $30 million cost was funded mostly by Microsoft, along with contributions from the City of Redmond and federal sources.[74]

Corridor improvement program

Since 2011, the Washington State Department of Transportation has undertaken a $4.56 billion

Montlake Boulevard interchange, replacement and widening of the Portage Bay Bridge, a parallel span for the Montlake Bridge, and new freeway lids in Roanoke and Montlake.[77]

As part of the funding of the program, electronic tolling began on the old floating bridge on December 29, 2011.[78]

Proposed improvements

  • A flyover ramp from westbound SR-520 to southbound Interstate 405 is currently deferred due to lack of construction funds.
  • The Sound Transit 2 proposal would add a Bus Rapid Transit (BRT) line to the entire SR-520 corridor, and a light rail extension joining the corridor in the vicinity of Overlake, continuing to the Overlake Transit Center on the Microsoft campus.

Exit list

The entire highway is in King County. All exits are unnumbered.

Locationmi[1]kmDestinationsNotes
Seattle
0.000.00 I-5 – Portland, Vancouver BCWestern terminus
0.200.32Roanoke Street / Harvard AvenueWestbound exit only
0.941.51Montlake Boulevard (SR 513) – University of WashingtonLast eastbound exit before toll
1.632.62Lake Washington BoulevardEastbound entrance only
SR 520 Albert D. Rosellini Evergreen Point Floating Bridge
Medina4.146.66Evergreen Point Freeway StationBus only
Hunts Point4.577.3584th Avenue NortheastEastbound exit and westbound entrance
Clyde Hill5.398.6792nd Avenue NortheastWestbound exit and eastbound entrance. Last westbound exit before toll.
5.158.29Yarrow Point Freeway StationBus only
Bellevue5.979.61Lake Washington Boulevard Northeast / Bellevue WayEastbound exit and westbound entrance; former SR 908
6.2910.12108th Avenue NortheastNo eastbound exit (except HOV)
6.9411.17 I-405 – Renton, Everett
7.5012.07124th Avenue NortheastEastbound exit and westbound entrance
9.1714.76148th Avenue Northeast
Redmond9.71–
11.21		15.63–
18.04		Northeast 40th Street / Northeast 51st Street
11.7918.97West Lake Sammamish Parkway NortheastFormer
SR 901
12.8220.63 SR 202 (Redmond Way)Eastbound exit and westbound entrance; continues as Avondale Road
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

  1. ^ a b Multimodal Planning Division (January 27, 2017). State Highway Log Planning Report 2016, SR 2 to SR 971 (PDF) (Report). Washington State Department of Transportation. pp. 1525–1532. Retrieved August 29, 2017.
  2. ^ "47.17.720: State route No. 520". Revised Code of Washington. Washington State Legislature. 1970. Retrieved July 17, 2017.
  3. ^ "SR 5 – Exit 168A/B: SR 520/Roanoke St/Boylston Ave" (PDF). Washington State Department of Transportation. March 14, 2017. Retrieved July 17, 2017.
  4. ^ a b c Google (July 17, 2017). "State Route 520" (Map). Google Maps. Google. Retrieved July 17, 2017.
  5. ^ "SR 520: Jct SR 513/Lake Washington Blvd" (PDF). Washington State Department of Transportation. May 20, 2015. Retrieved July 17, 2017.
  6. ^ Romano, Benjamin J. (November 11, 2007). "Microsoft campus expands, transforms, inside and out". The Seattle Times. p. A1. Retrieved July 17, 2017.
  7. ^ Fujioka, Justin (October 19, 2015). "When sharing can be a problem". WSDOT Blog. Washington State Department of Transportation. Retrieved August 28, 2017.
  8. ^ Pryne, Eric (November 5, 2004). "Commuters settle bus-reroute dispute". The Seattle Times. p. B4. Retrieved August 31, 2017.
  9. ^ Metro Transit System: Northeast Area (PDF) (Map). King County Metro. September 2016. Retrieved August 31, 2017.
  10. ^ "Chapter 8: Transit". SR 520, Medina to SR 202: Eastside Transit and HOV Project Environmental Assessment, Appendix Q: Transportation Discipline Report (Report). Washington State Department of Transportation. December 2009. p. 8-3. {{cite report}}: |access-date= requires |url= (help); External link in |chapterurl= (help); Unknown parameter |chapterurl= ignored (|chapter-url= suggested) (help)
  11. ^ Shaw, Greg (January 27, 2015). "A new 520 bike trail is re-shaping the Eastside". Crosscut.com. Retrieved August 31, 2017.
  12. ^ Regional Trails in King County (PDF) (Map). King County Parks and Recreation Division. February 2017. Retrieved August 31, 2017.
  13. ^ Federal Highway Administration (September 22, 2015). National Highway System: Seattle, WA (PDF) (Map). Federal Highway Administration. Retrieved August 31, 2017.
  14. ^ "What is the National Highway System?". Federal Highway Administration. January 31, 2017. Retrieved August 31, 2017.
  15. Washington State Transportation Commission
    . July 26, 2009. Retrieved August 31, 2017.
  16. ^ "Highways of Statewide Significance". Washington State Department of Transportation. Retrieved August 31, 2017.
  17. ^ 2016 Annual Traffic Report (PDF) (Report). Washington State Department of Transportation. 2017. p. 200. Retrieved August 31, 2017.
  18. ^ Stein, Alan J. (October 25, 1998). "Kirkland — Thumbnail History". HistoryLink. Retrieved July 17, 2017.
  19. ^ Stein, Alan J. (February 10, 2013). "Leschi, the first auto ferry in Western Washington, is launched on Lake Washington on December 6, 1913". HistoryLink. Retrieved July 17, 2017.
  20. ^ Reyonlds, Peggy (November 26, 1990). "'The biggest thing afloat'". The Seattle Times. p. A5. Retrieved July 19, 2017.
  21. ^ a b Whitely, Peyton (April 16, 1998). "Before the Bridge: From 1870 to 1950, most Eastsiders who wanted to cross Lake Washington traveled by ferry". The Seattle Times. p. B3. Retrieved July 19, 2017.
  22. ^ Boswell, Sharon; McConaghy, Lorraine (June 16, 1996). "A bridge to the future". The Seattle Times. Retrieved July 19, 2017.
  23. ^ "State Orders Survey for 2nd Lake Bridge". The Seattle Times. August 31, 1949. p. 1.
  24. ^
    Historic American Engineering Record
    (Report). 2010. Retrieved July 19, 2017.
  25. ^ "Details Of Multimillion Project Told". The Seattle Times. December 12, 1954. p. 1.
  26. ^ "City Studies Analysis Of 5 Routes For Lake Bridge". The Seattle Times. December 27, 1957. p. 1.
  27. ^ Willix, Douglas (November 11, 1957). "New Lake-Span Problems". The Seattle Times. p. 12.
  28. ^ "Montlake-Evergreen Point Route Picked For 2nd Lake Bridge; Construction To Begin In 8 Months". The Seattle Times. United Press International. August 3, 1954. p. 1.
  29. ^ Hittle, Leroy (December 12, 1956). "Highway Board View Is Indorsed". The Seattle Times. Associated Press. p. 1.
  30. ^ a b Dougherty, Phil (June 26, 2015). "Evergreen Point Floating Bridge opens on August 28, 1963". HistoryLink. Retrieved August 26, 2017.
  31. ^ "Montlake Club Protests Proposal For Lake Bridge". The Seattle Times. December 10, 1956. p. 25.
  32. ^ "Firm Prepares To Build Pontoons For Lake Bridge". The Seattle Times. February 19, 1961. p. 26.
  33. ^ "Senate Passes 2 Highway Bills". The Seattle Times. Associated Press. March 26, 1961. p. 41.
  34. ^ "Chapter 21: Highways". Session Laws of the State of Washington, 1961 extraordinary session. Washington State Legislature. April 3, 1961. p. 2617. {{cite book}}: |access-date= requires |url= (help); External link in |chapterurl= (help); Unknown parameter |chapterurl= ignored (|chapter-url= suggested) (help)
  35. ^ "Section of 10th Ave. E. To Be Closed". The Seattle Times. April 24, 1962. p. 29.
  36. ^ Barr, Robert A. (September 19, 1962). "Work Goes Fast: 2nd Lake Span Spurting Ahead". The Seattle Times. p. 3.
  37. ^ "Evergreen Span, Northrup Way To Be Linked". The Seattle Times. February 19, 1963. p. 9.
  38. ^ "Rosellini Snips Ribbon to Open New Floating Bridge". The Seattle Times. August 28, 1963. p. C.
  39. ^ "Traffic Routes to the Evergreen Point Floating Bridge". The Seattle Times. August 25, 1963. p. 4.
  40. ^ Prahl, C. G. (December 1, 1965). "Identification of State Highways" (PDF). Washington State Highway Commission. Retrieved August 26, 2017.
  41. ^ "To End Confusion: Highways Given Different Numbers". The Seattle Times. January 26, 1964. p. 24.
  42. ^ "Chapter 51: State Highways—Route Numbers". Session Laws of the State of Washington, 1970 1st extraordinary session. Washington State Legislature. February 24, 1970. p. 380. {{cite book}}: |access-date= requires |url= (help); External link in |chapterurl= (help); Unknown parameter |chapterurl= ignored (|chapter-url= suggested) (help)
  43. ^ "Hearing Set On Extending Highway 520". The Seattle Times. September 11, 1966. p. 42.
  44. ^ Barr, Robert A. (November 9, 1966). "2 Interchanges On East Side Freeway To Open Nov. 22". The Seattle Times. p. 1.
  45. ^ Barr, Robert A. (August 4, 1968). "Plans Announced For Redmond Freeway". The Seattle Times. p. 17.
  46. ^ "Work begins soon on Redmond-Seattle link". The Seattle Times. January 30, 1972. p. D20.
  47. ^ "Four-lane highway link opens". The Seattle Times. December 10, 1973. p. D15.
  48. ^ "Chapter 63: State Highways—Route Designations". Session Laws of the State of Washington, 1975. Washington State Legislature. April 5, 1975. p. 131. {{cite book}}: |access-date= requires |url= (help); External link in |chapterurl= (help); Unknown parameter |chapterurl= ignored (|chapter-url= suggested) (help)
  49. ^ "New Redmond bypass will open tomorrow". The Seattle Times. July 14, 1977. p. D5.
  50. ^ "Work begins next week on Redmond-bypass bridge". The Seattle Times. May 13, 1976. p. D9.
  51. ^ "Extension of Highway 520 to Redmond to be discussed". The Seattle Times. August 11, 1976. p. H2.
  52. ^ Sufia, David (November 24, 1976). "Bellevue's transit-land request makes Redmond mayor see red". The Seattle Times. p. D4.
  53. ^ Sufia, David (December 15, 1976). "Two-city 'pact' on highway?". The Seattle Times. p. H7.
  54. ^ Burt, Lyle (June 16, 1977). "House OK's $690 million for highways". The Seattle Times. p. C1.
  55. ^ Wilson, Marshall (October 18, 1978). "Lawsuit postpones Highway 520 bids". The Seattle Times. p. H1.
  56. ^ "State plans to OK funds for 520". The Seattle Times. March 13, 1979. p. A9.
  57. ^ Schulz, Elaine (December 30, 1981). "Council may reconsider 1-way streets". The Seattle Times. p. D4.
  58. OCLC 84172621
    . Retrieved August 28, 2017 – via Google Books.
  59. ^ "Chapter 177: State Highways Routes Revised". Session Laws of the State of Washington, 1985. Washington State Legislature. April 25, 1985. p. 674. {{cite book}}: |access-date= requires |url= (help); External link in |chapterurl= (help); Unknown parameter |chapterurl= ignored (|chapter-url= suggested) (help)
  60. ^ "Eastside Briefly". The Seattle Times. March 11, 1985. p. D1.
  61. ^ "Eastside Briefly: N.E. 51st St. traffic temporarily rerouted". The Seattle Times. September 8, 1986. p. B1.
  62. ^ Tizon, Alex (June 3, 1987). "City officials want to ease congestion on Route 520". The Seattle Times. p. H1.
  63. ^ Norton, Dee; Brooks, Diane (April 5, 1994). "Hwy. 522 gets slice of repair budget". The Seattle Times. p. B1.
  64. ^ Lopez Williams, Sarah (September 22, 1995). "520 lane fix: Help, not cure". The Seattle Times. p. B1.
  65. ^ Lopez Williams, Sarah (October 11, 1996). "New lane on 520 may ease backups". The Seattle Times. p. B1.
  66. ^ Johnston, Steve (August 28, 1996). "Twos, threes: 520 car-pool rules are all over the road". The Seattle Times. p. B1.
  67. ^ Whitely, Peyton (October 5, 2000). "Hwy. 520 ramps expected to ease Redmond commute". The Seattle Times. p. B1.
  68. ^ Bryant, Arelene (December 17, 2000). "Hwy. 520 adds ramp meters". The Seattle Times. p. B2.
  69. Redmond Reporter
    . Retrieved August 31, 2017.
  70. ^ "WSDOT Joins Local Leaders to Kick off New SR 202 / SR 520 Flyover Ramp" (Press release). Washington State Department of Transportation. May 2, 2007. Archived from the original on December 29, 2009. Retrieved August 31, 2017. {{cite press release}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  71. ^ Roe, Amy (May 3, 2007). "Redmond drivers may get reprieve". The Seattle Times. p. B3.
  72. ^ "Drivers to get a new lane as SR 520 project reaches milestone". Redmond Reporter. June 28, 2010. Retrieved August 31, 2017.
  73. ^ "SR 520 - West Lake Sammamish Parkway to SR 202 - Open December 2010". Washington State Department of Transportation. March 2011. Archived from the original on May 30, 2011. Retrieved August 31, 2017. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  74. ^ Pak, Samantha (December 16, 2010). "Ceremony kicks off the opening of new NE 36th Street Bridge". Redmond Reporter. Retrieved August 31, 2017.
  75. ^ "Highway 520 bridge opens to all traffic Monday". The Seattle Times. April 24, 2016. Retrieved May 11, 2016.
  76. ^ "SR 520 - Main Projects". Washington State Department of Transportation. Retrieved May 11, 2016.
  77. ^ "SR 520 Bridge Replacement and HOV Program: Annual Mega-Project Report" (PDF). Washington State Department of Transportation. September 2015. Retrieved May 11, 2016.
  78. ^ Lindblom, Mike (June 10, 2011). "Drivers' glee aside, delay in 520 bridge toll costs state". The Seattle Times. Retrieved August 5, 2011.

External links

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