Rt B S over Wyaconda Rvr
Lewis County, Missouri · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Rt B S over Wyaconda Rvr in Lewis County, Missouri, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 2013, making it 12 years old at the 2025 inventory.
- It carries about 739 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 46 of the 172 inventoried bridges in Lewis County rated good (26.7%); 10 (5.8%) are rated poor.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (40.05891, -91.4988)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 8 | Very good condition |
Bridge details
| Structure | Continuous prestressed concrete single box beam |
| Length | about 207 ft |
| Location | S 30 T 61 N R 5 W |
| NBI structure number | 34400 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in Lewis County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 61 S over Big Br CR | 1999 | 14,279 | Fair |
| US 61 S over Bland Br Ck | 2005 | 14,279 | Fair |
| US 61 S over Unnamed CR | 2005 | 14,279 | Fair |
| US 61 S over Unnamed CR | 2005 | 14,279 | Fair |
| US 61 S over Artesian Br CR | 2005 | 7,886 | Fair |
| US 61 N over Waconda Rvr | 2001 | 7,505 | Good |
All bridges nearby: Lewis County, MO bridge conditions · every bridge in Lewis County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.