Updated May 2, 2012
To schedule a drawspan opening, please call 206‑440‑4490.
Boaters with vessels taller than 45 feet must give at least one hour notice if they wish to pass through the SR 520 floating bridge drawspan between 9 a.m. and 4 p.m., seven days a week.

Drawspan openings during this time will occur on the hour and half-hour, with the latest at 3:30 p.m.

Boaters must give at least two hours for a drawspan opening between 7 p.m. and 6 a.m. on weekdays, or between 4 p.m. and 9 a.m. on weekends.

The drawspan will not open weekdays from 6:00 a.m., to 8:59 a.m., and 4 p.m., to 7 p.m., with the exception of federal holidays excluding Columbus Day.

The west navigation channel, shown above, has an estimated water depth of 30' at the center of the channel.

The east navigation channel is closed to marine traffic until approximately 2015 due to construction of the new SR 520 bridge. Learn more about the SR 520 bridge replacement and HOV project .