Mo 13 S over Dry Sac Rvr Br
Polk County, Missouri · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mo 13 S over Dry Sac Rvr Br in Polk County, Missouri, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1973 and reconstructed in 2009, making it 52 years old at the 2025 inventory.
- It carries about 22,761 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 89 of the 184 inventoried bridges in Polk County rated fair (48.4%); 32 (17.4%) 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 → (37.43299, -93.35561)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 5 | Fair condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 30 ft |
| Location | S 9 T 31 N R 22 W |
| NBI structure number | 2429 |
| Condition class | Fair |
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 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 |
| Mo 13 N over Dry Sac Rvr | 1970 | 10,782 | Poor |
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.