1 vote

Heitz Road Overpass


North web

The steel pony truss is clearly visible in the timber railing.

Photo taken by Fmiser

License: Creative Commons Attribution-Share-Alike (CC BY-SA)


BH Photo #286530


Street View 


At first glance, this looks like a typical timber stringer trestle hump-back bridge over the railroad - but the center span is actually a steel pony truss standing on steel bents made from rails. Timber stringers, timber deck, timber railing, timber bents for the approach spans. However, the main span and it's bents are steel.


Steel pony truss span in a timber trestle bridge over the BNSF Railroad on E Heitz Rd
Fulton County, Illinois
Open to traffic
Built ca. 1930
Steel pony truss on steel bents as the main span in a timber stringer trestle.
Length of largest span: 34.1 ft.
Total length: 122.0 ft.
Deck width: 15.1 ft.
Approximate latitude, longitude
+40.30962, -90.42370   (decimal degrees)
40°18'35" N, 90°25'25" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/718928/4465308 (zone/easting/northing)
Quadrangle map:
Land survey
T. 4 N., R. 1 E., Sec. 20
Average daily traffic (as of 2010)
Inventory numbers
IL 029-9909 (Illinois bridge number)
BH 15249 (Bridgehunter.com ID)
Inspection report (as of February 2017)
Overall condition: Poor
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Good (7 out of 9)
Deck condition rating: Poor (4 out of 9)
Sufficiency rating: 31.8 (out of 100)
View more at BridgeReports.com


Beam (16,407)
Built during 1930s (11,982)
Fulton County, Illinois (37)
Have street view (27,972)
Illinois (4,844)
One-lane traffic (7,695)
Open (40,418)
Owned by railroad (13,217)
Pony truss (16,783)
Queenpost truss (288)
Span length 25-50 feet (16,000)
Structurally deficient (13,275)
Timber stringer (4,209)
Total length 100-125 feet (5,285)
Truss (34,595)
Wooden deck (6,117)

Update Log 

  • June 10, 2015: Updated by Royce and Bobette Haley: refined design-to do list
  • July 12, 2014: New photos from Fmiser
  • June 27, 2014: Updated by Fmiser: corrected spelling
  • June 25, 2014: Updated by Fmiser: Expanded description
  • November 28, 2013: New Street View added by Brent Tindall

Related Bridges 


  • Flickr - Image
  • Brent Tindall - bizzat219 [at] yahoo [dot] com
  • Fmiser - fmiser [at] gmail [dot] com
  • Royce and Bobette Haley - roycehaley111 [at] yahoo [dot] com


Heitz Road Overpass
Posted July 12, 2014, by Fmiser (fmiser [at] gmail [dot] com)

This is a curious little bridge.

As I approached, it looked like a typical timber trestle overpass. However, hiding in the middle of the span is a steel pony truss.

The next oddity I notices was the posts on the bents. They are built up using two pieces of rail, curved at the top.

Then, between the top of the bent and the end joint of the pony truss is a short section of what sure looks like a wide-flange beam.

The concrete bent base has "A 1915" cast in it. If that is a date, the all-riveted construction, wide-flange beam, and the current 1930 build date conflict. If it's not a year - what does it mean?

Sorry I didn't get an overview photo - I was so busy with the details I forgot to get a wide view!

TR 459 Bridge
Posted November 19, 2009, by Dale Travis (daletravis [at] bigfoot [dot] com)

Photos taken 11-4-09. Bridge is on Heitz Rd.