SR 464 over CSX Railroad
Marion County, Florida · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 464 over CSX Railroad in Marion County, Florida, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 7 (good condition) on the 0-9 scale.
- It was built in 2009, making it 16 years old at the 2025 inventory.
- It carries about 31,000 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 41 of the 78 inventoried bridges in Marion County rated good (52.6%); 2 (2.6%) 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 2024, on a 24-month routine inspection cycle.
- 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 → (29.17168, -82.14451)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 303 ft |
| Location | 0.23mi West of US 301 |
| NBI structure number | 360182 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | December 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Florida department of transportation.
Busiest bridges in Marion County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-75 over SR-200 | 1996 | 95,500 | Fair |
| I-75 over SW 20th ST (CR-A225) | 1996 | 90,000 | Fair |
| I-75 over Cr-484 | 1964 | 52,250 | Fair |
| I-75 over Cr-484 | 1964 | 52,250 | Fair |
| I-75 over US-27 | 1964 | 47,750 | Fair |
| I-75 over SR-40 | 1964 | 45,000 | Good |
All bridges nearby: Marion County, FL bridge conditions · every bridge in Marion County · Florida bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.