Photo taken by Douglas W. Jones
License: Public domain: Released by author
View this photo on Wikipedia
BH Photo #241678
I put a photo of the low bridge clearance warnings for this bridge (and the bridge itself) on Wikimedia Commons:
The bridge clearance is a bit low, and since I came to Iowa City, this bridge has peeled the tops off of several trucks and once, a truck hauling a piece of heavy construction equipment knocked the bridge a few inches sideways, necessitating significant repair to one bridge abutment.
Aside from the multiple clearance warning signs, the bridge is now protected by classic railroad-style telltales, so that any over-height vehicles will announce themselves with a clatter of chains.
I've released all copyright on the bridge, if you want to upload the photo to this collection, feel free to do so.