It seems reasonable, but at least one study[1] concluded that during peak hours in 2004&#x2F;5 90% of northbound and 77% of southbound traffic on SR99 entered the viaduct from one of the downtown exits. WSDOT&#x27;s own analysis from 2011 found almost 50% of the viaducts traffic entering or exiting downtown [2].<p>To my knowledge there is no plan to improve surface streets to accommodate this traffic.<p>[1]: <a href="http:&#x2F;&#x2F;cnu.civicactions.net&#x2F;resources&#x2F;publications&#x2F;alaskan-way-viaduct-analysis-no-replacement-option-2006" rel="nofollow">http:&#x2F;&#x2F;cnu.civicactions.net&#x2F;resources&#x2F;publications&#x2F;alaskan-w...</a><p>[2]: <a href="http:&#x2F;&#x2F;www.wsdot.wa.gov&#x2F;Projects&#x2F;Viaduct&#x2F;Faqs" rel="nofollow">http:&#x2F;&#x2F;www.wsdot.wa.gov&#x2F;Projects&#x2F;Viaduct&#x2F;Faqs</a>