SR-100 over Grandin Canal
Putnam County, Florida · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR-100 over Grandin Canal in Putnam County, Florida, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1964, making it 61 years old at the 2025 inventory.
- It carries about 7,200 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 38 of the 73 inventoried bridges in Putnam County rated fair (52.1%); 2 (2.7%) 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 → (29.73082, -81.91124)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 25 ft |
| Location | 0.5 Mi. E. of Cr-315 |
| NBI structure number | 760025 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Florida department of transportation.
Busiest bridges in Putnam County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 17 (SR 15) over St Johns River | 1977 | 35,000 | Fair |
| US-17 (SR-15) over Satsuma Creek | 1952 | 19,972 | Fair |
| SR-207 over Orange Mills Canal | 2001 | 18,200 | Good |
| SR-207 over Dog Branch | 2001 | 18,200 | Fair |
| SR-20 over Sweetwater Creek | 2000 | 11,964 | Fair |
| US-17 (SR-15) over Pinetree Branch | 1993 | 10,600 | Good |
All bridges nearby: Putnam County, FL bridge conditions · every bridge in Putnam County · Florida bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.