MileCheck / Drawbridges / Seattle Drawbridges / Night openings
11 p.m. to 7 a.m.

Do Seattle drawbridges open at night?

Yes, with notice. One hour on the Ship Canal, twelve hours at South Park.

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Seattle Drawbridges

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Between 11 p.m. and 7 a.m. the tenders are not all on the bridges. A boat that wants an opening gives notice, and the rule says how much.

Ship Canal (Ballard Bridge, Fremont Bridge, University Bridge, Montlake Bridge)

One hour of notice by phone or radio to the tender at the Fremont Bridge, who covers the canal overnight. Montlake's rule does not carry the same sentence, but it is tended from the same crew.

South Park Bridge

Twelve hours of notice, by phone or VHF, to the South Park tender. If emergency responders need it opened, the bridge opens within 45 minutes of the call to the Fremont operator.

First Avenue South Bridge and Southwest Spokane Street Bridge

No night clause in the federal rule. They open on signal.

For a driver the practical point is this: a night lift is planned hours ahead, so it is short and rare. The lifts that catch people are the daytime ones between the rush-hour windows.

Questions

Do the Fremont and Ballard bridges open after 11 p.m.?

Yes, with one hour of notice to the Fremont Bridge tender.

How much notice does the South Park Bridge need at night?

Twelve hours, by phone or VHF radio, every night of the week.

What if an emergency vessel needs the South Park Bridge at night?

The rule requires it to open within 45 minutes of the call.

Seattle Drawbridges

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Live status from Seattle DOT via the MileCheck API. Opening rules from 33 CFR 117, the federal drawbridge regulations. Not affiliated with the City of Seattle, WSDOT or the Coast Guard.