Salmon Bay Bridge
Salmon Bay Bridge | |
|---|---|
| Refer to caption Salmon Bay Bridge seen from the southeast | |
| Coordinates | 47°40′00′′N 122°24′08′′W / 47.66680°N 122.40213°W / 47.66680; -122.40213 |
| Carries | BNSF Scenic Subdivision |
| Crosses | Salmon Bay |
| Other name(s) | Bridge No. 4 (GN), Bridge 6.3 (BNSF) |
| Characteristics | |
| Design | Bascule |
| Material | Steel |
| Total length | 1,140 ft (350 m)[1] |
| Width | 26 ft (7.9 m)[1] |
| Clearance above | 43 ft (13 m)[2] |
| Rail characteristics | |
| No. of tracks | 2[1] |
| History | |
| Opened | 1914 |
| Statistics | |
| Daily traffic | 30-40 trains per day[3] |
| Location | |
| Map | |
The Salmon Bay Bridge, also known as Bridge 6.3 on the BNSF railroad,[4] formerly Bridge No. 4 on the Great Northern Railroad,[5] is a Strauss Heel-trunnion single-leaf bascule bridge spanning Salmon Bay and connecting Magnolia/Interbay to Ballard in Seattle, Washington. The bridge is located just west of Commodore Park. It carries the main line of the BNSF Railway, the Scenic Subdivision, on its way north to Everett and south to King Street Station and Seattle's Industrial District.
The Salmon Bay Bridge, which is located west of the Hiram M. Chittenden Locks, is the last bridge to span the Lake Washington Ship Canal before it becomes Puget Sound. Built in 1914 by the Great Northern Railway, it has an opening span of 61 meters (200 feet) and has two tracks. Additionally, vessel clearance when lowered is 13.1 meters (43 feet) at mean high tide,[2] and up to 15.3 meters (50 feet) at low tide.[5]
BNSF Railway initially planned to replace the Salmon Bay Bridge with a new vertical-lift bridge, but chose to repair failing components of the existing bridge following consultation with the local community.[6] [3] In September 2022, the federal government issued a US25ドル million dollar grant to fund mechanical upgrades, while BNSF contributed another 70ドル million dollars toward the effort.[7]
References
[edit ]- ^ a b c Sherrard, Jean (December 22, 2012). "Seattle now & then: Ballard's bascule bridge" . Retrieved January 1, 2024.
- ^ a b Banel, Feliks (November 11, 2020). "Salmon Bay bridge operator keeps railroad tradition alive". MyNorthwest. Retrieved December 1, 2020.
- ^ "BNSF Ballard Bridge 6.3 Trunnion & Bearing Replacement" . Retrieved 2023年12月15日.
- ^ a b "Bridge 4". www.gngoat.org. Retrieved 2018年10月29日.
- ^ Lester, David C. (October 16, 2020). "BNSF chooses to repair, not replace, Salmon Bay Bridge". Railway Track & Structures . Retrieved December 1, 2020.
- ^ "BNSF drawbridge in Seattle receives federal grant". Trains. September 12, 2022. Retrieved January 5, 2024.
External links
[edit ]
- Bridges in Seattle
- Bascule bridges in the United States
- BNSF Railway bridges
- Railroad bridges in Washington (state)
- Bridges completed in 1914
- Great Northern Railway (U.S.) bridges
- 1914 establishments in Washington (state)
- Steel bridges in the United States
- Western United States bridge (structure) stubs
- Washington (state) building and structure stubs
- Washington (state) transportation stubs