Mn 23 over Split Rock Creek
Pipestone County, Minnesota · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mn 23 over Split Rock Creek in Pipestone County, Minnesota, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1937, making it 88 years old at the 2025 inventory.
- It carries about 3,278 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 57 of the 185 inventoried bridges in Pipestone County rated fair (30.8%); 6 (3.2%) 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 fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (43.90436, -96.37312)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 84 ft |
| Location | 0.5 Mi SW of Ihlen |
| NBI structure number | 5679 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 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 Pipestone County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Mn 23 over Split Rock Creek | 1947 | 3,974 | Fair |
| Mn 23 over Split Rock Creek | 1939 | 3,974 | Fair |
| Mn 23 over Jud Ditch # 1 | 1969 | 3,921 | Fair |
| Mn 23 over Ditch | 1936 | 3,450 | Fair |
| Mn 23 over Stream | 1972 | 3,450 | Fair |
| Mn 23 over Stream | 1936 | 3,278 | Fair |
All bridges nearby: Pipestone County, MN bridge conditions · every bridge in Pipestone County · Minnesota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.