Photos
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Side view Photos taken by Bill Burmaster |
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Facts
- Overview
- Four-span through truss bridge over the Illinois River on IL 170 at Seneca
- Location
- La Salle County, Illinois
- Status
- Open to two-lane traffic
- History
- Built 1932; rehabilitated 1986
- Design
- Pennsylvania through truss
- Dimensions
-
Length of largest span: 363.7 ft.
Total length: 1,509.4 ft.
Deck width: 23.0 ft.
Vertical clearance above deck: 15.0 ft.
- Approximate latitude, longitude
- +41.30167, -88.60944 (decimal degrees)
41°18'06" N, 88°36'34" W (degrees°minutes'seconds") - Approximate UTM coordinates
- 16/365260/4573495 (zone/easting/northing)
- USGS topographic map
- Seneca
- Inventory numbers
- IL 050-0070 (Illinois bridge number)
BH 15419 (Bridgehunter.com ID) - Inspection (as of 08/2006)
- Deck condition rating: Satisfactory (6 out of 9)
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Poor (4 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 46.2 (out of 100) - Average daily traffic (as of 2006)
- 4,800