Evergreen Point Floating Bridge (SR 520)

The Evergreen Point Floating Bridge, officially the Governor Albert D. Rosellini Bridge and commonly called the 520 Bridge, carries Washington State Route 520 across Lake Washington, linking Seattle with Bellevue, Medina, and the rest of the Eastside. Its 7,710-foot floating span is the longest floating bridge in the world and, at about 116 feet across its midpoint, also the widest.

The current bridge opened to traffic in April 2016, replacing a narrower 1963 span. It is supported by 77 concrete pontoons; a floating design was required because Lake Washington reaches roughly 214 feet deep, far too deep for conventional bridge piers.

The roughly $4.65 billion project was funded by state gas taxes, federal sources, and toll revenue, and the electronically tolled bridge is one of the region's most important cross-lake corridors serving Bellevue commuters and connecting to Microsoft and the broader Eastside.