Rt Oo S over Big Rock CR
Madison County, Missouri · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Rt Oo S over Big Rock CR in Madison County, Missouri, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1929 and reconstructed in 1974, making it 96 years old at the 2025 inventory.
- It carries about 3,139 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 56 of the 117 inventoried bridges in Madison County rated fair (47.9%); 22 (18.8%) 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 → (37.64146, -90.28439)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 5 | Fair condition |
| Superstructure | 6 | Satisfactory condition |
| Substructure | 5 | Fair condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 84 ft |
| Location | S 2963 T 34 N R 7 E |
| NBI structure number | 5238 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in Madison County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 67 S over Musco CR | 1963 | 10,919 | Fair |
| US 67 S over Lehmeyer CR | 1963 | 10,919 | Fair |
| Mo 72 E over Lit St Francois Rv | 2009 | 10,678 | Good |
| Mo 72 E over Village CR | 2009 | 10,678 | Good |
| US 67 S over Mill CR Br | 1999 | 8,844 | Good |
| Mine La Motte Ave over Saline CR | 1931 | 7,222 | Poor |
All bridges nearby: Madison County, MO bridge conditions · every bridge in Madison County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.