Tour RSVP

Registration: Visit the SR 99 Tunnel Construction Viewing Platform

For safety reasons, space for each tour group is limited to nine participants. If your group is large, you may need to sign up for separate tours. If you are part of an organization with a special tour request or a member of the media, please email viaduct@wsdot.wa.gov. We cannot guarantee that we will be able to accommodate all special requests.

Fields marked with * are required.

*Your First Name:
*Your Last Name:
*Email:
*Phone:
*Requested Tour Date and Time
I accept the following terms:
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    • You must wear sturdy, closed-toe shoes. No sandals, flip-flops, high heels or slip-on shoes allowed.
    • No one under the age of 13 is permitted.
    • Minors age 13 through 17 must be accompanied by a parent or guardian.
    • Participants are advised not to wear skirts or dresses.
    • You must sign a liability waiver on the day of the tour.