Rt W S over Is 70
St. Charles County, Missouri · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Rt W S over Is 70 in St. Charles County, Missouri, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1963 and reconstructed in 1984, making it 62 years old at the 2025 inventory.
- It carries about 10,399 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 12 of the 419 inventoried bridges in St. Charles County rated poor (2.9%); 12 (2.9%) 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 → (38.81666, -90.95358)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 4 | Poor condition |
| Superstructure | 4 | Poor condition |
| Substructure | 5 | Fair condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 219 ft |
| Location | S 19 T 47 N R 1 E |
| NBI structure number | 796 |
| Condition class | Poor |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in St. Charles County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Is 70 E over Sandford CR | 1953 | 122,262 | Fair |
| Is 70 E over Cole CR | 1953 | 109,398 | Fair |
| Is 70 E over Belleau CR | 1955 | 108,528 | Fair |
| Is 70 E over Rt K Co OR70W to OR70E | 1955 | 107,979 | Fair |
| Is 70 E over Gilmore Br | 1950 | 87,827 | Fair |
| Is 70 W over Cst S 5TH St | 1977 | 84,031 | Fair |
All bridges nearby: St. Charles County, MO bridge conditions · every bridge in St. Charles County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.