Bridgehunter.com | 170th Street Bridge

Share:

Photos

Photo taken by Bill Dunbar

Overview: Through truss bridge over Skunk River on a local road
Location: Story County, Iowa
Status: Open to traffic
History: Built 1939
Builders: - Illinois Steel Co. of Chicago, Illinois (Steel)
- Inland Steel Co. of East Chicago, Indiana (Steel)
Design: Eight panel Parker through truss with riveted connections.
Dimensions: Length of largest span: 149.9 ft.
Total length: 151.9 ft.
Deck width: 20.0 ft.
Vertical clearance above deck: 11.8 ft.
Also called: Skunk River Bridge
Approximate latitude, longitude: +42.10603, -93.57061 (decimal degrees)
42°06'22" N, 93°34'14" W (degrees°minutes'seconds")
Approximate UTM coordinates: 15/452821/4661705 (zone/easting/northing)
Land survey: T. 84 N., R. 23 W., Sec. 7
USGS topographic map: Ames East
Inventory numbers: IA 315280 (Iowa bridge number)
BH 14442 (Bridgehunter.com ID)
Inspection (as of 12/2010): Deck condition rating: Satisfactory (6 out of 9)
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Appraisal: Functionally obsolete
Sufficiency rating: 53.0 (out of 100)
Average daily traffic (as of 2011): 120

October 14, 2012: Updated by Luke Harden: Added steel fabricators to builders section
July 20, 2012: Updated by Luke Harden: Added category "M-frame portal"
September 12, 2011: New photo from Luke Harden
September 11, 2011: New photo from Luke Harden
September 4, 2011: New photo from Luke Harden
August 31, 2011: New photos from Jason Smith
July 6, 2011: New photos from Luke Harden
August 13, 2010: Updated by Nathan Holth: Updated bridge type.