3 votes

IAIS - 3rd Street Overpass


Photo taken by the flickr user

License: Creative Commons Attribution-NonCommercial-NoDerivs (CC BY-NC-ND)

View this photo on Flickr

BH Photo #231777

Street View 


Truss bridge on railroad approach to Government Bridge


Subdivided Warren Through truss bridge over 3rd Street on Iowa Interstate Railroad tracks
Davenport, Scott County, Iowa
Open to traffic
Built 1928
- American Bridge Co. of New York (Fabrication)
- Cedar Rapids Construction Co. of Cedar Rapids, Iowa (Erection)
- Chicago, Rock Island & Pacific Railroad (CRIP (1866-1920); RI (1920-1975) ROCK (1975-1980))
- Iowa Interstate Railroad (IAIS)
Warren through truss with sub-panels approached by I-Beams
Length of largest span: 142.0 ft.
Total length: 174.0 ft.
Approximate latitude, longitude
+41.52245, -90.56967   (decimal degrees)
41°31'21" N, 90°34'11" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/702779/4599608 (zone/easting/northing)
Quadrangle map:
Davenport East
Inventory numbers
IA 2930 (Iowa bridge number)
IA 3350 (Iowa bridge number)
BH 14369 (Bridgehunter.com ID)

Update Log 

  • January 31, 2021: New photo from Luke
  • January 16, 2020: Updated by Luke: Added contractor
  • September 27, 2017: New photos from John Marvig
  • October 30, 2013: New Street View added by Luke Harden
  • December 28, 2012: Updated by John Marvig: Added information
  • December 27, 2012: Updated by Luke Harden: Added builder
  • December 3, 2012: Photo imported by Luke Harden
  • October 21, 2012: Photo imported by Luke Harden
  • May 11, 2012: Photo imported by Luke Harden
  • October 8, 2011: Photo imported by Luke Harden
  • July 20, 2011: Updated by Luke Harden: Actually this line gets daily traffic from BNSF and IAIS
  • July 20, 2011: Updated by Daniel Hopkins: Updated status, this in on a currently active line with limited traffic
  • June 11, 2011: Updated by Luke Harden: Added photograph

Related Bridges 


  • Luke
  • Daniel Hopkins - chimera [at] clovermail [dot] net
  • John Marvig - marvigj27 [at] gmail [dot] com
  • The Daily Times from Davenport, Iowa on October 26, 1927 ยท 6 - Wednesday, October 26, 1927 1927. .rrtlltW ill 1 US 1MSE0FAIH A campaign of Information and eflucation regarding the use of air nmU will be launcnea in tne m-i cities next week, under the Joint j auspices of the chambers of com-citrce of the three ci


3rd Street Bridge
Posted March 4, 2012, by Matt Lohry


This is a sub-divided Warren through truss, which can be easily mistaken for a Baltimore; they look very similar. The way to tell the difference is to imagine the bridge without the smaller half-panel diagonals. In this case, without those smaller diagonals, you would have a standard Warren configuration. If it were a Baltimore, you would have a Pratt configuration rather than a Warren. Hope this helps!