FM over West Branch
Madison County, Iowa · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- FM over West Branch in Madison County, Iowa, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1957, making it 68 years old at the 2025 inventory.
- It carries about 131 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 82 of the 225 inventoried bridges in Madison County rated poor (36.4%); 82 (36.4%) 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 → (41.15709, -94.18495)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 5 | Fair condition |
| Superstructure | 5 | Fair condition |
| Substructure | 4 | Poor condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 125 ft |
| Location | 074293402 |
| NBI structure number | 000000000232680 |
| Condition class | Poor |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.
Busiest bridges in Madison County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-80 over Drainage Ditch | 1959 | 27,600 | Fair |
| US 169 over Cedar Creek | 1990 | 5,900 | Good |
| US 169 over North River | 1969 | 4,280 | Fair |
| US 169 over N Branch North River | 1983 | 4,280 | Fair |
| US 169 over Stream | 1944 | 4,280 | Fair |
| FM over Middle River | 1996 | 2,091 | Fair |
All bridges nearby: Madison County, IA bridge conditions · every bridge in Madison County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.