Csah 12 over Groundhouse River
Kanabec County, Minnesota · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Csah 12 over Groundhouse River in Kanabec County, Minnesota, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1971, making it 54 years old at the 2025 inventory.
- It carries about 380 vehicles a day (traffic count year 2018).
- Its listed owner is the county highway agency.
- It is one of 3 of the 82 inventoried bridges in Kanabec County rated poor (3.7%); 3 (3.7%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated November 2024, on a 12-month routine inspection cycle.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (45.78966, -93.36891)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 4 | 4 | Poor condition |
Bridge details
| Structure | Timber stringer or multi-beam girder |
| Length | about 126 ft |
| Location | 0.4 Mi S of Jct Csah 2 |
| NBI structure number | 33514 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | November 2024 |
| Inspection interval (item 91) | 12 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Minnesota department of transportation.
Busiest bridges in Kanabec County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Mn 65 over Snake River | 2022 | 11,800 | Good |
| Mn 65 over Ann River | 2007 | 7,000 | Good |
| Mn 23 over S Fk Groundhouse River | 2024 | 6,290 | Good |
| Mn 23 over Groundhouse River | 1998 | 6,000 | Good |
| Mn 65 over Groundhouse River | 2007 | 5,975 | Fair |
| Mn 23 over Ann River | 1951 | 5,800 | Fair |
All bridges nearby: Kanabec County, MN bridge conditions · every bridge in Kanabec County · Minnesota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.