Mn 23 over Big Willow River
Pine County, Minnesota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mn 23 over Big Willow River in Pine 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 2015, making it 10 years old at the 2025 inventory.
- It carries about 757 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 110 of the 172 inventoried bridges in Pine County rated good (64.0%); 7 (4.1%) 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 August 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 → (46.37084, -92.55302)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 75 ft |
| Location | 0.1 Mi NE of Duquette |
| NBI structure number | 58008 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2023 |
| Inspection interval (item 91) | 24 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 Pine County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 35 over St Croix Valley RR | 2016 | 11,998 | Good |
| I 35 over St Croix Valley RR | 2016 | 11,998 | Good |
| I 35 over Snake River | 2018 | 10,450 | Good |
| I 35 over Snake River | 2018 | 10,450 | Good |
| I 35 over Mission Creek | 1964 | 8,848 | Fair |
| I 35 over Mission Creek | 1964 | 8,848 | Good |
All bridges nearby: Pine County, MN bridge conditions · every bridge in Pine County · Minnesota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.