T 377 over Mud Creek
Swift County, Minnesota · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- T 377 over Mud Creek in Swift County, Minnesota, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1958, making it 67 years old at the 2025 inventory.
- It carries about 12 vehicles a day (traffic count year 1986).
- Its listed owner is a town or township highway agency.
- It is one of 24 of the 98 inventoried bridges in Swift County rated fair (24.5%); 1 (1.0%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated October 2024, on a 12-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 → (45.31041, -95.5108)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Timber stringer or multi-beam girder |
| Length | about 62 ft |
| Location | 2.0 Mi NE of Jct TH12 |
| NBI structure number | L7187 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | October 2024 |
| Inspection interval (item 91) | 12 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 Swift County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 12 over BNSF Rail | 1977 | 4,250 | Good |
| US 12 over Shakopee Creek | 1977 | 4,250 | Fair |
| Mn 7 over Pomme De Terre River | 1995 | 3,800 | Good |
| Mn 9 over Chippewa River | 1984 | 2,539 | Fair |
| US 12 over Chippewa River | 1971 | 2,135 | Good |
| Mn 9 over Mud Creek | 2013 | 1,850 | Good |
All bridges nearby: Swift County, MN bridge conditions · every bridge in Swift County · Minnesota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.