SR-21 over Clay Pit Creek
Clay County, Florida · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR-21 over Clay Pit Creek in Clay County, Florida, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1934, making it 91 years old at the 2025 inventory.
- It carries about 9,400 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 43 of the 90 inventoried bridges in Clay County rated good (47.8%); 3 (3.3%) 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 → (29.90982, -81.89738)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 32 ft |
| Location | 4.7 Mi. S. of SR-16 |
| NBI structure number | 710039 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Florida department of transportation.
Busiest bridges in Clay County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US-17 (SR-15) over Doctors Inlet | 1971 | 58,000 | Fair |
| US-17 (SR-15) over Johnson Slough | 1967 | 51,000 | Fair |
| SR-21 over Grog Branch | 1986 | 36,500 | Fair |
| SR-21 over Black Creek | 2010 | 36,500 | Good |
| CR 220 over Swimming Pen Creek | 1996 | 35,000 | Good |
| CR 220 over Grog Branch | 1959 | 34,500 | Fair |
All bridges nearby: Clay County, FL bridge conditions · every bridge in Clay County · Florida bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.