This bridge has been recently reopened after an extensive rehabilitation. Surprisingly care was taken to retain its original appearance. Usually bridges like this have the sides removed and replaced with modern type guardrails. The last picture is of poor quality but was taken in 2003 before any work was done. At that time the sides were crumbling badly and actually starting to lean outward in places.
According to historical data that I’ve gathered there was an iron arch bridge here before this one, and before that a wooden covered draw bridge.
When the water is low you can see the remains of pier foundations to the north of this bridge.
For more info and pictures check out http://www.carrollcountymuseum.org/photoarchive.html.
Webmaster's note: The photos that were here have been incorporated into the main site.
Here's a JPG version of the 2003 picture.