Mn 6 over Mud Brook
Crow Wing County, Minnesota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mn 6 over Mud Brook in Crow Wing County, Minnesota, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1971, making it 54 years old at the 2025 inventory.
- It carries about 2,415 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 25 of the 73 inventoried bridges in Crow Wing County rated good (34.2%); 5 (6.8%) 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 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 → (46.6487, -93.95327)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 29 ft |
| Location | 12.3 Mi N of Crosby |
| NBI structure number | 91175 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 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 Crow Wing County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Mn 210 over Mississippi River | 1932 | 29,051 | Fair |
| Mn 210 over Paul Bunyan Trail | 2003 | 27,888 | Good |
| Mn 371 over Mississippi River | 1998 | 12,842 | Fair |
| Msas 126 over Mississippi River | 1974 | 12,100 | Good |
| Mn 210 over Sand Creek | 1931 | 10,100 | Good |
| Csah 3 over Mississippi River | 1950 | 9,200 | Fair |
All bridges nearby: Crow Wing County, MN bridge conditions · every bridge in Crow Wing County · Minnesota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.