List of Seattle bridges

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File:Ship canal bridge and downtown skyline, 2000.jpg
Bridges crossing over waterways towards downtown Seattle

The city of Seattle has multiple bridges that are significant due to their function, historical status, or engineering. Bridges are needed to mitigate the city's waterways and hilly topography.[1] Twelve bridges have been granted historical status by the city, federal government, or both. Seattle also has some of the only permanent floating pontoon bridges in the world.[2]

Lake Washington and Puget Sound are to the east and west of the city, respectively. They connect via a series of canals and Lake Union that are collectively known as the Lake Washington Ship Canal.[3] The four double-leaf bascule bridges crossing the Ship Canal are the oldest in the city, having opened between 1917 and 1930. The easternmost—the Montlake and University bridges—connect neighborhoods south of the canal to the University District. The Fremont Bridge crosses the center of the canal and is one of the most often raised drawbridges in the world due to its clearance over the water of only 30 feet (9.1 m).[4] The westernmost crossing of the ship canal is the Ballard Bridge.[5]

The floating bridges carry Interstate 90 and State Route 520 across Lake Washington to the Eastside suburbs.[6] The SR 520 Albert D. Rosellini Evergreen Point Floating Bridge, which opened in 2016 as the replacement for another floating bridge at the same site,[7][8] is the longest floating bridge in the world.[9][10] The Lacey V. Murrow Memorial Bridge had previously been replaced after the original span sunk in 1990 when water filled an open maintenance hatch during refurbishing. Age and the 2001 Nisqually earthquake have damaged several other spans. The risk of future earthquakes has increased the need to replace already deteriorated bridges in the city, such as the Alaskan Way Viaduct and the Magnolia Bridge.[11][12]

The neighborhoods that make up West Seattle are on a peninsula separated from downtown by the Duwamish River. The West Seattle Bridge is the primary roadway crossing the river.[13] The neighborhood's Spokane Street Bridge is the world's first and only hydraulically operated concrete double-leaf swing bridge.[14]

List of bridges

Key: Year opened
*: Listed in the National Register of Historic Places[15]
†: Listed as a city landmark[16]
Name
(Alternative names in parenthesis)		 Image Year opened Type Length Spans Carries Coordinates
Arboretum Sewer Trestle Reinforces concrete piers and arches supporting a walkway 1913 (circa)*†[17] Arch 180 ft (55 m)[17] Lake Washington Boulevard E Sewer and a foot path Lua error in package.lua at line 80: module 'strict' not found.
Ballard Bridge
(15th Avenue Bridge)		 An aging concrete and steel bridge crossing calm waters on a sunny day 1917*[18] Bascule 2,854 ft (870 m)[19] Salmon Bay 15th Avenue NW Lua error in package.lua at line 80: module 'strict' not found.
Cowen Park Bridge 150px 1936*†[20] Arch 358 ft (109 m)[20] A ravine in Cowen Park 15th Avenue NE Lua error in package.lua at line 80: module 'strict' not found.
First Avenue South Bridge 150px 1956[lower-alpha 1] Bascule 300 ft (91 m)[22] Duwamish River State Route 99 Lua error in package.lua at line 80: module 'strict' not found.
Fremont Bridge 150px 1917*†[lower-alpha 2] Bascule 242 ft (74 m)[24] Fremont Cut Road connecting Fremont Avenue N and 4th Avenue N Lua error in package.lua at line 80: module 'strict' not found.
George Washington Memorial Bridge
(Aurora Bridge)[lower-alpha 3]		 A high steel bridge 1932*†[22] Cantilever and truss 2,945 ft (898 m)[25] Lake Union State Route 99 Lua error in package.lua at line 80: module 'strict' not found.
Homer M. Hadley Memorial Bridge
(Third Lake Washington Bridge)		 150px 1989[22] Floating pontoon 5,811 ft (1,771 m)[22] Lake Washington Interstate 90 Lua error in package.lua at line 80: module 'strict' not found.
Jeanette Williams Memorial Bridge
(West Seattle Bridge)[lower-alpha 4]		 150px 1984[27] Cantilever 2,607 ft(705 m)[26] Duwamish River Road connecting Fauntleroy Way SW and the Spokane Street Viaduct Lua error in package.lua at line 80: module 'strict' not found.
Jose Rizal Bridge
(12th Avenue South Bridge)[lower-alpha 5]		 150px 1911*[29] Truss arch 420 ft (130 m)[29] S Dearborn Street and Interstate 90 12th Avenue S and Interstate 90 Lua error in package.lua at line 80: module 'strict' not found.
Lacey V. Murrow Memorial Bridge al=The support structures of a bridge before it continues to a section floating on water 1993[lower-alpha 6] Floating pontoon 6,620 ft (2,020 m)[22] Lake Washington Interstate 90 Lua error in package.lua at line 80: module 'strict' not found.
Magnolia Bridge 150px 1930[12] Truss 3,600 ft (1097 m)[30] Filled-in tidelands of Smith Cove W Garfield Street Lua error in package.lua at line 80: module 'strict' not found.
Montlake Bridge 150px 1925*†[31] Bascule 344 ft (105 m)[31] Lake Washington Ship Canal State Route 513 Lua error in package.lua at line 80: module 'strict' not found.
North Queen Anne Drive Bridge A steel bridge surrounded by trees 1936†[32] Arch 238 ft (73 m)[32] Wolf Creek N Queen Anne Drive Lua error in package.lua at line 80: module 'strict' not found.
Salmon Bay Bridge 150px 1914†[33] Bascule and truss 200 ft (61 m)[34] Salmon Bay BNSF Railway Lua error in package.lua at line 80: module 'strict' not found.
Ship Canal Bridge 150px 1962[35] Truss 4,429 ft (1,350 m)[36] Portage Bay Interstate 5 Lua error in package.lua at line 80: module 'strict' not found.
Schmitz Park Bridge 150px 1936*†[37] Rigid frame 175 ft (53 m)[14] A ravine in Schmitz Park SW Admiral Way Lua error in package.lua at line 80: module 'strict' not found.
Spokane Street Bridge 150px 1991[19] Swing 480 ft (150 m)[19] Duwamish River SW Spokane Street Lua error in package.lua at line 80: module 'strict' not found.
SR 520 Albert D. Rosellini Evergreen Point Floating Bridge
(Evergreen Point Floating Bridge, 520 Bridge)[lower-alpha 7]		 150px 2016[7] Floating pontoon 7,708 ft (2,350 m)[39] Lake Washington State Route 520 Lua error in package.lua at line 80: module 'strict' not found.
20th Avenue NE Bridge
(Ravenna Park Bridge)		 150px 1913*†[40] Arch 354 ft (108 m)[14] A ravine in Ravenna Park 20th Avenue NE (pedestrian access only) Lua error in package.lua at line 80: module 'strict' not found.
University Bridge A concrete and steel bridge crossing over a body of water 1919*[lower-alpha 8] Bascule 218 ft (66 m)[24] Portage Bay Eastlake Avenue NE Lua error in package.lua at line 80: module 'strict' not found.

See also

Notes

  1. ↑ A parallel span was built in 1996; the approaches to the original span were partially demolished and the structure was retrofitted between 1996 and 1998.[21]
  2. ↑ The city rebuilt the approaches at each end of the bridge between 2006 and 2007.[23]
  3. ↑ Commonly known as the "Aurora Bridge" but the structure was named after George Washington.[25]
  4. ↑ Known as the "West Seattle Bridge" but the span was renamed for a city council member in 2009.[26]
  5. ↑ Known as the "12th Avenue South Bridge" but named in honor of José Rizal.[28]
  6. ↑ All but the approaches replace the original bridge, which opened in 1940 and sank in 1990.[22]
  7. ↑ Replaced a 1963 bridge at the same site. The original bridge was initially called the "Evergreen Point Floating Bridge" but renamed in honor of Albert Rosellini.[38]
  8. ↑ Remodeled and dedicated in 1933.[19]

References

  1. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  2. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  3. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  4. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  5. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  6. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  7. ↑ 7.0 7.1 Lua error in package.lua at line 80: module 'strict' not found.
  8. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  9. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  10. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  11. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  12. ↑ 12.0 12.1 Lua error in package.lua at line 80: module 'strict' not found.
  13. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  14. ↑ 14.0 14.1 14.2 Lua error in package.lua at line 80: module 'strict' not found.
  15. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  16. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  17. ↑ 17.0 17.1 Lua error in package.lua at line 80: module 'strict' not found.
  18. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  19. ↑ 19.0 19.1 19.2 19.3 Lua error in package.lua at line 80: module 'strict' not found.
  20. ↑ 20.0 20.1 Lua error in package.lua at line 80: module 'strict' not found.
  21. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  22. ↑ 22.0 22.1 22.2 22.3 22.4 22.5 Lua error in package.lua at line 80: module 'strict' not found.
  23. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  24. ↑ 24.0 24.1 Lua error in package.lua at line 80: module 'strict' not found.
  25. ↑ 25.0 25.1 Lua error in package.lua at line 80: module 'strict' not found.
  26. ↑ 26.0 26.1 Lua error in package.lua at line 80: module 'strict' not found.
  27. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  28. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  29. ↑ 29.0 29.1 Lua error in package.lua at line 80: module 'strict' not found.
  30. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  31. ↑ 31.0 31.1 Lua error in package.lua at line 80: module 'strict' not found.
  32. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  33. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  34. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  35. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  36. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  37. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  38. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  39. ↑ Lua error in package.lua at line 80: module 'strict' not found.
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