2 votes

Dillon Road Bridge


Photo taken by Dale Travis


BH Photo #132257


A rare surviving example of a 12-panel pinned Pratt through truss.


Pratt through truss bridge over Mackinaw River on Dillon Road.
Tazewell County, Illinois
Future prospects
Slated for demolition and replacement in 2018.
12-panel, pinned Pratt through truss
3-panel,riveted Warren pony truss
Length of largest span: 200.0 ft.
Total length: 253.8 ft.
Deck width: 15.7 ft.
Vertical clearance above deck: 18.1 ft.
Also called
Cedar Bluff Bridge
Approximate latitude, longitude
+40.43799, -89.57470   (decimal degrees)
40°26'17" N, 89°34'29" W   (degrees°minutes'seconds")
Approximate UTM coordinates
16/281623/4479555 (zone/easting/northing)
Quadrangle map:
Delavan North
Land survey
T. 23 N., R. 4 W., Sec. 17
Average daily traffic (as of 2008)
Inventory numbers
IL 090-3095 (Illinois bridge number)
BH 15688 (Bridgehunter.com ID)
Inspection report (as of January 2013)
Overall condition: Poor
Superstructure condition rating: Critical (2 out of 9)
Substructure condition rating: Fair (5 out of 9)
Deck condition rating: Good (7 out of 9)
Sufficiency rating: 22.1 (out of 100)
View more at BridgeReports.com

Update Log 

  • March 9, 2021: Updated by Tony Dillon: Added stuff
  • July 27, 2018: Updated by Elliott Johnson: changed status to abandoned
  • April 20, 2016: New photos from Steve Conro
  • May 6, 2014: New photos from Elliott Johnson
  • December 17, 2013: Updated by Nathan Holth: This bridge is now doomed.
  • July 4, 2008: Updated by Anthony Dillon: status



Dillon Road Bridge
Posted March 9, 2021, by Tony Dillon (spansaver [at] hotmail [dot] com)

...Not to mention I kinda fancy the road name! 😜

Dillon Road Bridge
Posted March 9, 2021, by Tony Dillon (spansaver [at] hotmail [dot] com)

The county has probably weighed the low traffic count, along with the massive cost to build a new bridge here and just abandoned it. You don't see many surviving Pratts of this length, so I would love to see them do the right thing and restore it!

Dillon Road Bridge
Posted March 8, 2021, by Faith (faithmathes02 [at] gmail [dot] com)

Why is this bridge considered abandoned, and not able to be rebuilt?