Mn 86 over I 90
Jackson County, Minnesota · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mn 86 over I 90 in Jackson 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 1971, making it 54 years old at the 2025 inventory.
- It carries about 3,100 vehicles a day (traffic count year 2018).
- Its listed owner is the state highway agency.
- It is one of 54 of the 181 inventoried bridges in Jackson County rated fair (29.8%); 4 (2.2%) 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 August 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 → (43.63886, -95.17464)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 307 ft |
| Location | at Jct Th 86 |
| NBI structure number | 32804 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Minnesota department of transportation.
Busiest bridges in Jackson County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 90 over Middlestadt Creek | 1973 | 8,800 | Fair |
| US 71 over Des Moines River | 2015 | 6,700 | Good |
| Mn 60 over Stream | 1999 | 6,300 | Good |
| Mn 60 over Duck Lake Outlet | 2001 | 6,100 | Good |
| I 90 over Th 71 | 1971 | 4,400 | Fair |
| I 90 over Des Moines R; Rd | 1971 | 3,409 | Fair |
All bridges nearby: Jackson County, MN bridge conditions · every bridge in Jackson County · Minnesota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.