Mn 9 over Marsh River
Norman County, Minnesota · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mn 9 over Marsh River in Norman County, Minnesota, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1948, making it 77 years old at the 2025 inventory.
- It carries about 1,650 vehicles a day (traffic count year 2018).
- Its listed owner is the state highway agency.
- It is one of 32 of the 149 inventoried bridges in Norman County rated fair (21.5%); 4 (2.7%) are rated poor.
- 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 → (47.2912, -96.51223)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 99 ft |
| Location | 0.3 Mi S of Jct Th 200 |
| NBI structure number | 6694 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Minnesota department of transportation.
Busiest bridges in Norman County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Mn 9 over S Br Wild Rice River | 1979 | 1,650 | Fair |
| Mn 9 over Wild Rice River | 2016 | 1,650 | Fair |
| Mn 9 over Co Ditch # 37 | 1948 | 1,650 | Fair |
| US 75 over Co Ditch # 1 | 1986 | 1,637 | Good |
| Mn 200 over Jud Ditch # 51 | 2001 | 1,632 | Fair |
| US 75 over Marsh River | 2010 | 1,500 | Fair |
All bridges nearby: Norman County, MN bridge conditions · every bridge in Norman County · Minnesota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.