This is one interesting bridge. It was always posted one lane traffic since at least the mid-1960s. If I remember correctly, it had a wooden deck as late as about 1970. It makes for one tough stretch of highway: going westbound, it is just a handful of yards after crossing the bridge before crossing the railroad track, then another short hop to MO 139 at Osgood. I spent my childhood about 7 miles northeast of that bridge, which we used frequently at the time as a shortcut to Trenton. I'll see about getting photos of this bridge in the near future.