L Avenue Bridge

Photos

Oblique view

From the northeast.

Photo taken by J.R. Manning

BH Photo #109481

Bridge is likely a relocated Chicago & North Western Railway pony truss, converted for road use. Details underneath this seem to indicate this.

Overview: Pony truss bridge over Union Pacific Railroad on L Avenue
Location: Boone County, Iowa
Status: Open to traffic
History: Built 1900
Railroads: - Chicago & North Western Railway (CNW)
- Union Pacific Railroad (UP)
Design: Riveted double-intersection Warren pony truss
Dimensions: Length of largest span: 46.9 ft.
Total length: 129.9 ft.
Deck width: 17.7 ft.
Approximate latitude, longitude: +42.06127, -93.95077 (decimal degrees)
42°03'41" N, 93°57'03" W (degrees°minutes'seconds")
Approximate UTM coordinates: 15/421334/4657016 (zone/easting/northing)
Quadrangle map:: Boone West
Land survey: T. 84 N., R. 27 W., Sec. 26
Inventory numbers: IA 77840 (Iowa bridge number)
BH 12907 (Bridgehunter.com ID)
Inspection (as of 05/2010): Deck condition rating: Poor (4 out of 9)
Superstructure condition rating: Serious (3 out of 9)
Substructure condition rating: Serious (3 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 25.7 (out of 100)
Average daily traffic (as of 2003): 25