The bridge is used by an average of 71, 000 vehicles a day, so the roadblock will cause a major disruption in trade and tourism between Seattle and Vancouver, British Columbia.

NPR: Feds Look For Temporary Fix After I-5 Collapse

"Part of the investment that Russia has made is not only what the world will see in Russia, but also they're building a winter paradise that they hope to showcase through the Olympic broadcast and attract tourism in the future, " says 2010 Vancouver champion Bill Demong, who competed at a Nordic combined skiing test event in Sochi last weekend.

CNN: February 8, 2013 -- Updated 1159 GMT (1959 HKT)

Special workshops on this subject will take place at the Ecotourism and Sustainable Tourism Conference 2008 (ESTC 2008), held from October 27-29, 2008, in Vancouver, British Columbia, Canada (www.ecotourismconference.org).

CNN: The International Ecotourism Society statement