Homer M. Hadley Memorial Bridge

Homer M. Hadley Memorial Bridge Seattle

Bridges of Seattle/Homer M. Hadley Memorial Bridge
Written By VAMONDE Seattle

The Third Lake Washington Bridge, officially the Homer M. Hadley Memorial Bridge, is one of the Interstate 90 floating bridges. It is the fifth-longest floating bridge in the world, at 5,811 feet (1772 m).


The bridge was built in 1989 and is named for Homer More Hadley, who designed the bridge's companion span, the Lacey V. Murrow Memorial Bridge. Hadley also designed the McMillin Bridge in Pierce County.

In 2023, the East Link light-rail is scheduled for completion. It will be the first time that a light-rail line will operate on a floating bridge.


The bridge carries four westbound lanes, including a HOV lane, as well as a bicycle and pedestrian path on the north side.

Prior to 2017, it also carried two reversible lanes, configured to normally carry westbound traffic on weekday mornings and eastbound traffic at other times. Use of the reversible express lanes was restricted to HOV traffic, except for vehicles traveling to and from Mercer Island.

With a total of five traffic lanes and three full-sized shoulders, the Third Lake Washington Bridge was the widest floating bridge in the world, until the completion of the new Evergreen Point Floating Bridge in 2016.

Cover image by SounderBruce is licensed under CC BY-SA 2.0. Image courtesy of Wikipedia.

Bridges of Seattle

Homer M. Hadley Memorial Bridge

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