Cth Bb over Koshkonong Creek
Poor Condition112 years old1,500 vehicles/day
Location
| State | Wisconsin |
| County | Dane |
| Location | 1.9m E Jct Cth N |
| Carries | Cth Bb |
| Crosses | Koshkonong Creek |
| Coordinates | 43.08986, -89.16939 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 5 (Fair) |
| Superstructure | 3 (Serious) |
| Substructure | 4 (Poor) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 29.5 ft (9 m) |
| Max Span | 27.9 ft (8.5 m) |
| Deck Width | 42.3 ft (12.9 m) |
| Deck Area | 116.1 sq m |
| Main Spans | 1 |
| Year Built | 1914 |
Traffic
| Avg Daily Traffic | 1,500 (2022) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 12 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | P13003200000000 |