It seems reasonable, but at least one study[1] concluded that during peak hours in 2004/5 90% of northbound and 77% of southbound traffic on SR99 entered the vi

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