County Rd S-80 over Bear CR
Polk County, Missouri · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- County Rd S-80 over Bear CR in Polk County, Missouri, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1900, making it 125 years old at the 2025 inventory.
- It carries about 30 vehicles a day (traffic count year 2024).
- Its listed owner is the county highway agency.
- It is one of 32 of the 184 inventoried bridges in Polk County rated poor (17.4%); 32 (17.4%) 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 April 2024, on a 24-month routine inspection cycle.
- It has fracture-critical members (NBI item 92A): steel tension members without a redundant load path, which get their own scheduled inspections.
- 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 → (37.58531, -93.48634)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 4 | 4 | Poor condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 4 | 4 | Poor condition |
Bridge details
| Structure | Steel girder and floorbeam |
| Length | about 79 ft |
| Location | S 17 T 33 N R 23 W |
| NBI structure number | 20468 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | April 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
| Fracture critical (item 92A) | Yes |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in Polk County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Mo 13 S over Slagle CR | 1973 | 25,477 | Fair |
| Mo 13 S over Dry Sac Rvr Br | 1973 | 22,761 | Fair |
| Mo 13 S over Br of Brush CR | 1958 | 14,992 | Fair |
| Mo 13 S over Br Dry Fork CR | 1958 | 14,992 | Fair |
| Mo 13 S over Dry Sac Rvr | 1972 | 11,979 | Fair |
| Mo 83 S over Mo 13 | 2003 | 11,254 | Fair |
All bridges nearby: Polk County, MO bridge conditions · every bridge in Polk County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.