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305th Street Overpass

Carroll County, Iowa

Photos 

Looking North

Photo taken by Daniel Barnes in July 2017

Enlarge

BH Photo #397645

Map 

Description 

Likely built out of rebuilt railroad girders

Facts 

Overview
Pony plate girder bridge over BNSF Railway on 305th Street
Location
Carroll County, Iowa
Status
Open to traffic
History
Built 1913
Railroads
- BNSF Railway (BNSF)
- Chicago, Milwaukee, St. Paul & Pacific Railroad (MILW; CMStP&P; CMStP)
Design
Pony plate girder
Dimensions
Length of largest span: 63.0 ft.
Total length: 164.1 ft.
Deck width: 19.7 ft.
Also called
MILW Bridge #Z-1282.5
MILW Bridge #Z-1282 1/2
Approximate latitude, longitude
+41.91333, -94.81111   (decimal degrees)
41°54'48" N, 94°48'40" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/349802/4641739 (zone/easting/northing)
Quadrangle map:
Dedham
Average daily traffic (as of 2008)
70
Inventory numbers
IA 93340 (Iowa bridge number)
BH 52806 (Bridgehunter.com ID)
Inspection report (as of June 2009)
Overall condition: Poor
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Poor (4 out of 9)
Deck condition rating: Serious (3 out of 9)
Sufficiency rating: 45.3 (out of 100)
View more at BridgeReports.com

Categories 

BNSF Railway (1,196)
Beam (13,556)
Built 1913 (786)
Built during 1910s (9,082)
Carroll County, Iowa (53)
Chicago, Milwaukee, St. Paul & Pacific Railroad (919)
Concrete stringer (658)
Girder (8,835)
 Iowa (6,096)
Modified (11)
Open (37,871)
Owned by railroad (10,781)
Plate girder (6,732)
Span length 50-75 feet (9,339)
Through girder (3,290)
Total length 125-175 feet (5,496)

Update Log 

  • October 27, 2018: New photos from John Marvig
  • July 20, 2017: New photos from Daniel Barnes
  • July 3, 2012: Added by Luke Harden

Sources 

  • Luke
  • Daniel Barnes
  • John Marvig - marvigj27 [at] gmail [dot] com
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Comments 

305th Street Overpass
Posted October 25, 2018, by John Marvig (marvigj27 [at] gmail [dot] com)

Visited this bridge recently. It appears to have been an old turntable or bridge for railroad use, rebuilt and converted to road use. There is one structure confirmed to have been constructed using this technique for the same railroad in Minnesota. I will request additional information on this bridge from the Milwaukee Road Archives.