Auto Tour Route over Minnesota River
Big Stone County, Minnesota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Auto Tour Route over Minnesota River in Big Stone County, Minnesota, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2007, making it 18 years old at the 2025 inventory.
- It carries about 50 vehicles a day (traffic count year 2023).
- It is one of 10 of the 17 inventoried bridges in Big Stone County rated good (58.8%); 1 (5.9%) 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 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 → (45.26033, -96.41033)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very 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 90 ft |
| Location | 0.75 Mi S. of Road 17 End |
| NBI structure number | 000032640-00012 |
| 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) | 4: foundations stable, field review says exposed foundations need protection |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Minnesota department of transportation.
Busiest bridges in Big Stone County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 12 over Minnesota River | 2012 | 4,366 | Fair |
| US 75 over Stony Run | 1932 | 1,527 | Fair |
| Csah 30 over Minnesota River | 2007 | 1,400 | Good |
| US 12 over Stony Run | 2021 | 1,250 | Good |
| Mn 7 over Five Mile Creek | 1934 | 1,137 | Fair |
| Mn 28 over Co Ditch # 10 | 1978 | 1,035 | Fair |
All bridges nearby: Big Stone County, MN bridge conditions · every bridge in Big Stone County · Minnesota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.