The bridge to the north of the new highway bridge shows as a crossing of the CRI&P on the 1968 quad. The rail may have been out of use for 30 years, partly removed, and thus hard to see in the photos.
I deleted the street view that showed the abandoned bridge on this page. Also, I created a new page for the abandoned bridge. I don't know anything about it, so if anybody else does, feel free to add some insight. I added some photos I took a few weeks ago. Here's the link to the page:
This bridge was indeed demolished a few years ago. The bridge you saw was likely the old railroad bridge.
THIS BRIDGE NO LONGER EXISTS! UPDATE YOUR SITE!
Perhaps you can help me or direct me to a proper source.
Was there an earlier version of a movable bridge, perhaps for the RR, perhaps not, at DeValls Bluff.
Some of my relatives think my Grandfather operated a bridge at De Valls Bluff in ~ 1900 (+/- 10 years) and others say he ran a ferry.
Thanks for whatever.
History of the DeValls Bluff Bridge (from AHTD): http://tinyurl.com/devalls-bluff