B Avenue Overpass

Photos 

The west face

This bridge is a typical pony truss built by the Chicago & Northwestern Railway in Iowa in the early part of the 20th Century. (The C&NW was absorbed by the Union Pacific in 1995.)

Photo taken by J.R. Manning in July 2007

BH Photo #109897

Map 

Facts 

Overview

Pony truss bridge over UPRR on B Avenue

Location

Tama County, Iowa

Status

Open to traffic

History

Built ca. 1920

Design

Riveted double-intersection Warren pony truss

Dimensions

Length of largest span: 79.1 ft.
Total length: 136.2 ft.
Deck width: 18.0 ft.

Approximate latitude, longitude

+41.99101, -92.74626   (decimal degrees)
41°59'28" N, 92°44'47" W   (degrees°minutes'seconds")

Approximate UTM coordinates

15/521017/4648808 (zone/easting/northing)

Quadrangle map:

Montour

Land survey

T. 83 N., R. 16 W., Sec. 20

Average daily traffic (as of 2001)

25

Inventory numbers

IA 318380 (Iowa bridge number)
BH 14492 (Bridgehunter.com ID)

Inspection report (as of September 2008)

Overall condition: Poor
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Poor (4 out of 9)
Deck condition rating: Poor (4 out of 9)
Sufficiency rating: 31 (out of 100)
View more at BridgeReports.com

Categories 

Update Log 

• January 26, 2008: New photo from J.R. Manning

Sources 

• J.R. Manning - thekitchenguy [at] sbcglobal [dot] net

Comments