US 36 E over Grindstone CR
DeKalb County, Missouri · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 36 E over Grindstone CR in DeKalb County, Missouri, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1991, making it 34 years old at the 2025 inventory.
- It carries about 5,613 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 144 of the 238 inventoried bridges in DeKalb County rated fair (60.5%); 16 (6.7%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated December 2023, 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 → (39.75473, -94.31641)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 203 ft |
| Location | S 18 T 57 N R 30 W |
| NBI structure number | 3779 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | December 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in DeKalb County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Is 35 S over Brushy CR | 1964 | 19,244 | Fair |
| US 36 E over Freeman Br | 1962 | 11,148 | Fair |
| US 36 E over Jordon CR | 1962 | 11,148 | Fair |
| US 69 S over US 36 | 1990 | 9,126 | Fair |
| US 36 W over Is 35 | 1963 | 7,793 | Good |
| US 36 E over Is 35 | 1963 | 6,359 | Good |
All bridges nearby: DeKalb County, MO bridge conditions · every bridge in DeKalb County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.