Co Rd SW 771 over Norris CR
Johnson County, Missouri · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Co Rd SW 771 over Norris CR in Johnson County, Missouri, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1900 and reconstructed in 1988, making it 125 years old at the 2025 inventory.
- It carries about 110 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 276 of the 475 inventoried bridges in Johnson County rated fair (58.1%); 33 (6.9%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated December 2024, on a 24-month routine inspection cycle.
- 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 → (38.5716, -93.89349)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 79 ft |
| Location | S 27 T 44 N R 27 W |
| NBI structure number | 24855 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | December 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in Johnson County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 50 E over Mayes Br | 1968 | 18,503 | Fair |
| US 50 E over Trib Blackwater Rv | 1924 | 17,553 | Fair |
| Bu 13 S over US 50 | 1959 | 17,494 | Fair |
| US 50 W over Post Oak CR | 1967 | 14,542 | Fair |
| Bu 13 S over UP RR | 1963 | 14,241 | Fair |
| US 50 W over Devils Br | 1967 | 10,624 | Fair |
All bridges nearby: Johnson County, MO bridge conditions · every bridge in Johnson County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.