NOTE: Field checks by myself and others have revealed that this is a "Frankenbridge". The following essay was written before field checks were performed:
Hat tip to Ruth Reynolds for discovering a long abandoned Pratt truss in Fort Scott, Kansas. A discussion of the bridge follows.
This structure is of particular significance for several reasons. The bridge features pedimented portal bracing. Farnsworth and Blodgett occasionally used this type of portal bracing, as did the Morse Bridge Company. Perhaps other companies used it as well. See http://www.historicbridges.org/pennsylvania/eaglerock/index.... for an example of this type of portal bracing. This design is a rare find today. A plaque is mounted within the bracing, but it appears to be blank.
Farnsworth and Blodgett built a nearly identical but smaller bridge in Greenwood County, Kansas http://www.bridgehunter.com/ks/greenwood/walnut-creek/ Aerial imagery indicates that the Greenwood County bridge has been removed.
The Mill Creek Bridge also features at least three different designs of vertical members including paired eyebars.
The exact length remains unknown, but the bridge features 11 panels, 7 of which have counters. 11 panels is a large number for a single span Pratt that may have been constructed pre-1900.
The bridge may be constructed of wrought iron, which would increase its significance.
The original railings have been removed and replaced by ARMCO rails. The bridge features a walkway which is probably a later addition. Despite its alterations, this bridge is an important discovery.
Vandals have discovered the bridge as evidenced by a painting of a woman wearing nothing but Bunny Slippers.