Look closely at the crossing
These are the parallel Interstate 90 bridges linking Seattle and Mercer Island across Lake Washington. Floating pontoons support the long spans, an engineering solution that makes the ordinary act of crossing the lake rather extraordinary.
The photographer’s viewpoint
This picture was taken by Steven Arnold, who very kindly sent a copy. It shows the Homer M Hadley Floating Bridge (on the left) and the Lacey V Murrow Floating Bridge (on the right).
The original account places Steven at East Portal Park above the Mount Baker Ridge tunnels, looking east with Mercer Island behind the bridges. That description and credit remain part of the photograph’s story.
For a visit today, use public park or trail access and check temporary restrictions. The historical photograph does not show every change to the crossing since it was taken. Do not stop on the freeway for a photograph.

