Facts
- Overview
- Lost pony truss bridge over Gannon Creek on Linn-Benton Road
- Location
- Linn County, Iowa
- Status
- No longer exists
- History
- Built 1917; replaced 2002
- Design
- Pony truss
- Dimensions
-
Length of largest span: 60.0 ft.
Total length: 64.0 ft.
Deck width: 15.7 ft.
- Land survey
- T. 84 N., R. 8 W., Sec. 31
- Inventory numbers
- IA 221830 (Iowa bridge number)
BH 13842 (Bridgehunter.com ID)
- Inspection (as of 05/1999)
- Deck condition rating: Serious (3 out of 9)
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Serious (3 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 22.3 (out of 100)
- Average daily traffic (as of 1997)
- 60