Mo 740 E over Flat Branch
Boone County, Missouri · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mo 740 E over Flat Branch in Boone County, Missouri, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1963 and reconstructed in 1989, making it 62 years old at the 2025 inventory.
- It carries about 25,470 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 156 of the 335 inventoried bridges in Boone County rated fair (46.6%); 12 (3.6%) 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 → (38.93864, -92.34756)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 66 ft |
| Location | S 14 T 48 N R 13 W |
| NBI structure number | 338 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in Boone County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Is 70 E over Lp 70 | 2015 | 63,178 | Good |
| Is 70 E over Hominy CR | 1983 | 53,537 | Good |
| Is 70 E over Grindstone CR | 1949 | 47,500 | Fair |
| Is 70 E over Sugar Br | 1958 | 40,417 | Fair |
| US 63 S over Mo 740 | 1976 | 38,962 | Fair |
| US 63 S over Hominy CR | 2005 | 38,962 | Good |
All bridges nearby: Boone County, MO bridge conditions · every bridge in Boone County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.