Rt A S over Is 70
Warren County, Missouri · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Rt A S over Is 70 in Warren 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 1961, making it 64 years old at the 2025 inventory.
- It carries about 1,003 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 9 of the 151 inventoried bridges in Warren County rated poor (6.0%); 9 (6.0%) 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 → (38.83882, -91.22452)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 4 | Poor condition |
| Superstructure | 4 | Poor condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 196 ft |
| Location | S 14 T 47 N R 3 W |
| NBI structure number | 8091 |
| Condition class | Poor |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in Warren County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Is 70 E over Big CR | 1949 | 42,532 | Fair |
| Is 70 E over Camp CR | 1953 | 34,545 | Fair |
| Mo 47 S over NS RR | 1978 | 19,531 | Good |
| Mo 47 S over Is 70 | 1990 | 19,392 | Fair |
| Mo 47 S over Missouri Rvr UP RR | 2017 | 16,108 | Good |
| Mo 47 S over Lake CR | 2014 | 14,764 | Good |
All bridges nearby: Warren County, MO bridge conditions · every bridge in Warren County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.