Evergreen Point Floating Bridge
floating bridge opened in 2016
The Evergreen Point Floating Bridge, also known as the 520 Bridge and officially the Governor Albert D. Rosellini Bridge, is a floating bridge that carries Washington State Route 520 across Lake Washington from Seattle to its eastern suburbs. The 7,710-foot-long (2,350 m) floating span is the longest floating bridge in the world, as well as the world's widest, measuring 116 feet (35 m) at its midpoint. It is a toll bridge and uses electronic collection.
The bridge opened in April 2016 and replaced the original Evergreen Point Floating Bridge at the site, which was 130 feet (40 m) shorter and four lanes wide. The original bridge was vulnerable to earthquakes and strong wind events, which would frequently shut down traffic. Planning for a replacement began in 1997 and was approved in 2011; the $4.65 billion budget was derived from state gas taxes and federal sources, as well as toll revenue. Construction of the 77 concrete pontoons began in 2011 and on-site assembly began in 2014.
The Evergreen Point Floating Bridge carries six lanes of traffic—including two lanes for high-occupancy vehicles—and has a multi-use trail for cyclists and pedestrians on its north side. It also carries bus traffic and is designed for a future retrofit that would add light rail service.
History
Background
The original Evergreen Point Floating Bridge, also named for state governor Albert D. Rosellini, opened on August 28, 1963, carrying the four-lane State Route 520 (at the time designated temporarily as the Evergreen Point branch of Primary State Highway 1 until the 1964 state highway renumbering).
The public source identifies “Evergreen Point Floating Bridge” as floating bridge opened in 2016. This brief keeps that definition visible, then builds a research path around Evergreen, Point and Floating.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Evergreen Point Floating Bridge”, the useful work is to connect “floating bridge opened in 2016” to the records capable of establishing context and consequence.
The strongest evidence will usually combine a dated visual record with documents produced by the authority responsible for the place. The source revision retrieved here is dated Sep 23, 2026. The linked authority identifier is Q23885833. Authority coordinates are 47.641, -122.259. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 2016, 1997, 2011 and 2014.
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This entry incorporates text from “Evergreen Point Floating Bridge” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.