M 20 over S Br Yellow Medicine R
Lyon County, Minnesota · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- M 20 over S Br Yellow Medicine R in Lyon County, Minnesota, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1925, making it 100 years old at the 2025 inventory.
- It carries about 25 vehicles a day (traffic count year 1992).
- Its listed owner is a city or municipal highway agency.
- It is one of 6 of the 234 inventoried bridges in Lyon County rated poor (2.6%); 6 (2.6%) are rated poor.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (44.56494, -95.98399)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 4 | Poor condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 32 ft |
| Location | 0.2 Mi N of Jct Csah 3 |
| NBI structure number | L4650 |
| Condition class | Poor |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Minnesota department of transportation.
Busiest bridges in Lyon County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 59 over Redwood River | 1950 | 9,500 | Fair |
| Mn 19 over Redwood River | 1931 | 8,800 | Fair |
| Mn 19 over Redwood River | 1975 | 8,300 | Fair |
| Mn 23 over Ditch | 1999 | 5,910 | Good |
| Mn 23 over Redwood River | 1973 | 5,204 | Fair |
| US 59 over Redwood R Diversion Chan | 1962 | 5,200 | Fair |
All bridges nearby: Lyon County, MN bridge conditions · every bridge in Lyon County · Minnesota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.