CR 320 over Castor Rvr
Madison County, Missouri · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- CR 320 over Castor Rvr in Madison County, Missouri, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 2016, making it 9 years old at the 2025 inventory.
- It carries about 50 vehicles a day (traffic count year 2024).
- Its listed owner is the county highway agency.
- It is one of 39 of the 117 inventoried bridges in Madison County rated good (33.3%); 22 (18.8%) are rated poor.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (37.34153, -90.17397)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 9 | Excellent condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 63 ft |
| Location | S 28 T 31 N R 8 E |
| NBI structure number | 35400 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in Madison County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 67 S over Musco CR | 1963 | 10,919 | Fair |
| US 67 S over Lehmeyer CR | 1963 | 10,919 | Fair |
| Mo 72 E over Lit St Francois Rv | 2009 | 10,678 | Good |
| Mo 72 E over Village CR | 2009 | 10,678 | Good |
| US 67 S over Mill CR Br | 1999 | 8,844 | Good |
| Mine La Motte Ave over Saline CR | 1931 | 7,222 | Poor |
All bridges nearby: Madison County, MO bridge conditions · every bridge in Madison County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.