Csah 31 over I 90
Faribault County, Minnesota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Csah 31 over I 90 in Faribault County, Minnesota, 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 1973, making it 52 years old at the 2025 inventory.
- It carries about 333 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 121 of the 226 inventoried bridges in Faribault County rated good (53.5%); 8 (3.5%) 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 September 2023, on a 24-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 → (43.66214, -93.66842)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 349 ft |
| Location | 3.0 Mi E of Jct Th 22 |
| NBI structure number | 22819 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Minnesota department of transportation.
Busiest bridges in Faribault County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 90 over E Fk Blue Earth River | 1977 | 7,508 | Fair |
| I 90 over Co Ditch # 9 | 1975 | 7,448 | Fair |
| I 90 over Co Ditch # 5 | 1975 | 7,162 | Fair |
| I 90 over Co Ditch # 5 | 1975 | 7,162 | Fair |
| I 90 over US 169 | 1976 | 4,450 | Fair |
| US 169 over E Fk Blue Earth River | 1976 | 3,995 | Fair |
All bridges nearby: Faribault County, MN bridge conditions · every bridge in Faribault County · Minnesota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.