Co. St. Aid Hwy 13 over Chippewa River
Chippewa County, Minnesota · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Co. St. Aid Hwy 13 over Chippewa River in Chippewa County, Minnesota, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1938 and reconstructed in 1986, making it 87 years old at the 2025 inventory.
- It carries about 520 vehicles a day (traffic count year 2022).
- It is one of 51 of the 116 inventoried bridges in Chippewa County rated fair (44.0%); 7 (6.0%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: substructure 6 to 5, superstructure 6 to 7.
- Its most recent inspection on record is dated August 2024, 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 → (45.022, -95.7912)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 6 | 7 | Good condition |
| Substructure | 6 | 5 | Fair condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 150 ft |
| Location | 1 Miles NE of Watson Mn |
| NBI structure number | 000000000006389 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Minnesota department of transportation.
Busiest bridges in Chippewa County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Mn 29 over Parkway Ave | 2020 | 7,439 | Good |
| US 212 over Minnesota River | 1986 | 7,300 | Fair |
| Mn 23 over Hawk Creek | 2000 | 5,278 | Good |
| Csah 15 over Chippewa River | 1955 | 5,000 | Fair |
| Mn 29 over Tcw Rail | 2017 | 4,050 | Good |
| Mn 7 over Co Ditch # 11 | 1977 | 3,804 | Fair |
All bridges nearby: Chippewa County, MN bridge conditions · every bridge in Chippewa County · Minnesota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.