Cth B over Chief River
Sawyer County, Wisconsin · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Cth B over Chief River in Sawyer County, Wisconsin, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1988, making it 37 years old at the 2025 inventory.
- It carries about 1,803 vehicles a day (traffic count year 2024).
- Its listed owner is the county highway agency.
- It is one of 36 of the 98 inventoried bridges in Sawyer County rated good (36.7%); 17 (17.3%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It was rated fair in the 2024 inventory and is now good (deck 6 to 7, superstructure 6 to 7, substructure 6 to 7).
- Its most recent inspection on record is dated August 2024, on a 12-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (45.98224, -91.21418)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 7 | Good condition |
| Superstructure | 6 | 7 | Good condition |
| Substructure | 6 | 7 | Good condition |
Bridge details
| Structure | Timber slab |
| Length | about 83 ft |
| Location | 0.2M W Jct Cth A |
| NBI structure number | B57003900000000 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2024 |
| Inspection interval (item 91) | 12 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 Sawyer County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Sth 27 over Namekagon River | 1996 | 13,500 | Poor |
| Sth 77 over Namekagon River | 2000 | 6,200 | Fair |
| Ush 63 over Namekagon River | 1976 | 3,900 | Good |
| Cth B over Round Lake Narrows | 1986 | 2,296 | Fair |
| Sth 27 over Nail Creek | 1990 | 1,600 | Good |
| Sth 27 over Brunet River | 1990 | 1,600 | Good |
All bridges nearby: Sawyer County, WI bridge conditions · every bridge in Sawyer County · Wisconsin bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.