Boyd Rd over Unnamed CR
Ste. Genevieve County, Missouri · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Boyd Rd over Unnamed CR in Ste. Genevieve County, Missouri, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 2002, making it 23 years old at the 2025 inventory.
- It carries about 50 vehicles a day (traffic count year 2024).
- Its listed owner is the county highway agency.
- It is one of 54 of the 104 inventoried bridges in Ste. Genevieve County rated fair (51.9%); 11 (10.6%) 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 → (37.76449, -90.13422)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 54 ft |
| Location | S 3 T 35 N R 8 E |
| NBI structure number | 31673 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in Ste. Genevieve County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Is 55 S over Amburster CR | 1970 | 27,080 | Good |
| Is 55 S over Saline CR | 1969 | 23,236 | Fair |
| Is 55 S over Isle Dubois CR | 1970 | 13,572 | Good |
| Is 55 N over Isle Dubois CR | 1970 | 13,508 | Fair |
| Is 55 N over Isle Dubois CR | 1970 | 13,508 | Fair |
| Is 55 S over Fourche CR | 1970 | 13,211 | Fair |
All bridges nearby: Ste. Genevieve County, MO bridge conditions · every bridge in Ste. Genevieve County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.