2 votes

Hononegah Forest Preserve Bridge


Photo taken by Mark's Postcards from Beloit , CC BY-NC-ND 2.0

View this photo on Flickr

BH Photo #194212


Marsh Rainbow Arch bridge over Dry Run Creek in Hononegah Forest Preserve
Winnebago County, Illinois
Open to traffic
Built 1925
- Ferguson Construction Co. of Rockford, Illinois
- Marsh Engineering Co. of Des Moines, Iowa
One span Marsh Arch Bridge (Concrete bowstring through arch, "Rainbow Arch")
Length of largest span: 75.1 ft.
Total length: 80.0 ft.
Deck width: 19.0 ft.
Eligible for the National Register of Historic Places
Also called
Hononegah Road Bridge
Approximate latitude, longitude
+42.43972, -89.04250   (decimal degrees)
42°26'23" N, 89°02'33" W   (degrees°minutes'seconds")
Approximate UTM coordinates
16/332011/4700620 (zone/easting/northing)
Quadrangle map:
South Beloit
Average daily traffic (as of 2017)
Inventory numbers
IL 101-9930 (Illinois bridge number)
BH 15763 (Bridgehunter.com ID)
Inspection report (as of May 2018)
Overall condition: Fair
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Deck condition rating: Fair (5 out of 9)
Sufficiency rating: 56.2 (out of 100)
View more at BridgeReports.com

Update Log 

  • November 23, 2011: New photos from Steve Conro
  • February 25, 2011: New photo from Nathan Holth



Hononegah Forest Preserve Bridge
Posted September 21, 2020, by Tyler

This is the only rainbow arch in Illinois

Hononegah Forest Preserve Bridge
Posted February 25, 2011, by Matthew Lohry

Up until their remodel, my folks had paneling on their kitchen walls that featured drawn pictures of different buildings, and two bridges--a covered one shown in portal, and the other was an elevation of this identical bridge design, right down to the rectangular insets stamped into the arches! Almost makes me wonder if this particular bridge was the model for that paneling pic?

Hononegah Forest Preserve Bridge
Posted February 25, 2011, by Nathan Holth

After some searching, I discovered that this bridge is a rare Marsh Rainbow Arch!