Bridge conditions in Nassau County, Florida
106 inventoried bridges · 3 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 106 bridges in Nassau County: 52 rated good, 51 fair, and 3 poor.
- 3 of the 106 bridges in Nassau County, Florida, are rated in poor condition (2.8%) in the 2025 National Bridge Inventory, as of .
- 52 bridges (49.1%) are rated good and 51 (48.1%) fair.
- The median Nassau County bridge was built in 1973.
- The busiest poor-rated bridge is CR 121 over Deep Creek (built 1949), carrying about 2,500 vehicles a day.
Good 49.1% · Fair 48.1% · Poor 2.8% of 106 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| CR 121 over Deep Creek | 1949 | 2,500 | Poor |
| Stokes Road over St. Marys River | 1978 | 110 | Poor |
| Crandall Road over Mcqueen Swamp | 1973 | 51 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-95 NB (SR-9) over St. Marys River | 1971 | 75,637 | Fair |
| I-95 (SR-9) over Lofton Creek | 1968 | 56,500 | Fair |
| I-95 (SR-9) over Cat Creek | 1968 | 56,500 | Fair |
| I-95 (sbl) over St Marys River | 1971 | 54,710 | Fair |
| SR-200 and A1A over Lofton Creek | 2019 | 45,500 | Good |
| I-95 SB (SR-9) over Sr-a1a & SR-200 | 1967 | 34,000 | Good |
| I-95 NB (SR-9) over Sr-a1a & SR-200 | 1967 | 34,000 | Good |
| I-95 SB (SR-9) over Tide Creek | 1967 | 28,250 | Good |
| I-95 NB (SR-9) over Tide Creek | 1967 | 28,250 | Good |
| I-95 NB (SR-9) over US-17 (SR-5) | 1968 | 28,250 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Florida: Florida bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.