MoDOT (http://lakeexpo.com/news/lake_news/bridge-closed-along-i--after-modot-finds-structural-issues/article_38b31620-8707-11e4-9a63-6f95aee5d472.html) has closed the Gasconade River Bridge (http://bridgehunter.com/mo/laclede/gasconade-66/) along old Route 66 until further notice after determining the bridge was unsafe for travel.
Personally, I'd like to see it saved as a Pedestrian Bridge.