T 407 over Co Ditch # 7
Polk County, Minnesota · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- T 407 over Co Ditch # 7 in Polk County, Minnesota, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1967, making it 58 years old at the 2025 inventory.
- It carries about 68 vehicles a day (traffic count year 1973).
- Its listed owner is a town or township highway agency.
- It is one of 94 of the 269 inventoried bridges in Polk County rated fair (34.9%); 8 (3.0%) 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 October 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 → (48.13169, -96.84688)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Prestressed concrete channel beam |
| Length | about 93 ft |
| Location | 0.4 Mi S of NW Cor. Sec |
| NBI structure number | 60513 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 2023 |
| 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 Polk County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 2 over Red River | 1963 | 15,475 | Fair |
| US 2 over 4th ST NW | 1964 | 13,700 | Fair |
| US 2B over Red River | 1929 | 13,400 | Fair |
| Msas 119 over Red Lake River | 1980 | 7,400 | Fair |
| Msas 113 over Red River of the North | 1967 | 6,630 | Fair |
| US 2 over Red Lake River | 1990 | 4,760 | Fair |
All bridges nearby: Polk County, MN bridge conditions · every bridge in Polk County · Minnesota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.