Cth D Lake Ave over Trout Creek
Marinette County, Wisconsin · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Cth D Lake Ave over Trout Creek in Marinette County, Wisconsin, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1922 and reconstructed in 1960, making it 103 years old at the 2025 inventory.
- It carries about 1,700 vehicles a day (traffic count year 2024).
- Its listed owner is the county highway agency.
- It is one of 47 of the 135 inventoried bridges in Marinette County rated fair (34.8%); 12 (8.9%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated October 2024, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (45.05917, -87.76081)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Concrete slab |
| Length | about 38 ft |
| Location | 0.1M N Jct Cth B |
| NBI structure number | B38001000000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Wisconsin department of transportation.
Busiest bridges in Marinette County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ush 41-bridge St over Menominee River | 2005 | 18,592 | Good |
| Ush 41-bridge St over Menominee River | 2005 | 18,300 | Good |
| Ush 41 over Unnamed CR | 2008 | 13,000 | Good |
| Ush 141 over Peshtigo River | 1992 | 8,900 | Good |
| Ush 141 over S Br Beaver Creek | 1999 | 7,400 | Good |
| Lrd Hattie St over Menominee River | 1976 | 7,200 | Fair |
All bridges nearby: Marinette County, WI bridge conditions · every bridge in Marinette County · Wisconsin bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.