WSDOT: Why the SR 99 tunnel is safer than the Viaduct during an earthquake

Seattle's new State Route 99 tunnel is designed to hold up against most major earthquake threats the Pacific Northwest faces – including "The Big One." Officials say the new tunnel under Seattle would be the safest place to be during and after a big earthquake.
Published: 5:29 PM PST January 7, 2019
Updated: 5:40 PM PST January 7, 2019