Federal Rd over Br of Niangua Rvr
Dallas County, Missouri · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Federal Rd over Br of Niangua Rvr in Dallas County, Missouri, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 3 (serious condition) on the 0-9 scale.
- It was built in 1900 and reconstructed in 1998, making it 125 years old at the 2025 inventory.
- It carries about 10 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 11 of the 114 inventoried bridges in Dallas County rated poor (9.6%); 11 (9.6%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- It was rated fair in the 2024 inventory and is now poor (substructure 5 to 3).
- Its most recent inspection on record is dated March 2024, on a 12-month routine inspection cycle.
- It is coded scour critical (NBI item 113 = 3): scour critical: foundations unstable for the assessed or calculated scour.
- 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 → (37.49336, -93.00079)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 5 | 3 | Serious condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 29 ft |
| Location | S 15 T 32 N R 19 W |
| NBI structure number | 22379 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | March 2024 |
| Inspection interval (item 91) | 12 months |
| Scour (item 113) | 3: scour critical: foundations unstable for the assessed or calculated scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in Dallas County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 65 S over Wilson CR | 1992 | 9,071 | Fair |
| US 65 S over Buffalo CR | 1992 | 7,502 | Fair |
| US 65 S over Hankens CR | 1992 | 7,502 | Fair |
| US 65 S over Br of Lindley CR | 1928 | 5,307 | Fair |
| US 65 S over Lindley CR | 1928 | 5,290 | Fair |
| US 65 S over Br of Lindley CR | 1928 | 5,290 | Fair |
All bridges nearby: Dallas County, MO bridge conditions · every bridge in Dallas County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.