Facts
- Overview
- Swing bridge over Ontonagon River on M-64 in Ontonagon
- Location
- Ontonagon County, Michigan
- Status
- Open to traffic
- History
- Built 1939
- Design
- Swing
- Dimensions
-
Length of largest span: 98.8 ft.
Total length: 309.1 ft.
Deck width: 25.9 ft.
- Recognition
- Posted to the National Register of Historic Places
- Approximate latitude, longitude
- +46.87250, -89.32167 (decimal degrees)
46°52'21" N, 89°19'18" W (degrees°minutes'seconds") - Approximate UTM coordinates
- 16/323077/5193612 (zone/easting/northing)
- USGS topographic map
- Ontonagon South
- Inventory number
- BH 20192 (Bridgehunter.com ID)
- Inspection (as of 05/2006)
- Deck condition rating: Poor (4 out of 9)
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Serious (3 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 12.5 (out of 100) - Average daily traffic (as of 2003)
- 4,288