This tour takes 60 minutes and advanced registration is required. This is a free public tour offered by WSDOT and you'll get an upclose look at construction on the south end of the SR 99 tunnel. The tour doesn't go into the tunnel, but will give you a good intro to the Pioneer Square neighborhood and the prjoect. No pets or kids under 13 allowed. - -- -Tours at 1pm Tuesday through Friday, and 1pm and 3pm on Saturday.