Bridge conditions in Monroe County, Florida
98 inventoried bridges · 5 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
5 of the 98 bridges the federal inventory lists in Monroe County are rated poor; the rest split 32 good and 61 fair.
- 5 of the 98 bridges in Monroe County, Florida, are rated in poor condition (5.1%) in the 2025 National Bridge Inventory, as of .
- 32 bridges (32.7%) are rated good and 61 (62.2%) fair.
- The median Monroe County bridge was built in 1981.
- The busiest poor-rated bridge is Card Sound Road over Tubbys Creek (built 1969), carrying about 3,182 vehicles a day.
Good 32.7% · Fair 62.2% · Poor 5.1% of 98 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 |
|---|---|---|---|
| Card Sound Road over Tubbys Creek | 1969 | 3,182 | Poor |
| Card Sound Road over Mosquito Creek | 1969 | 3,182 | Poor |
| CR-941 Boca Chica over Similar Sound Local Cnl | 1957 | 2,230 | Poor |
| CR939 Sugarloaf B. over Un-Named Channel | 1961 | 592 | Poor |
| 117th Street over Vaca Channel #2 | 1967 | 294 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 1 (SR 5) over Rockland Channel | 1979 | 47,000 | Good |
| US 1 (SR 5) over Salt Run | 1992 | 38,500 | Fair |
| US 1 (SR 5) over Naval Base Blvd | 1988 | 27,500 | Good |
| US 1 (SR 5) over Jewfish Creek | 2008 | 26,500 | Good |
| US 1 (NB & SB) over Manatee Creek | 2008 | 26,500 | Fair |
| US-1 (SR-5) over Vaca Cut | 1982 | 25,000 | Fair |
| US-1 NB (900125) over Cow Key Channel | 1978 | 23,000 | Good |
| US-1 SB (900086) over Cow Key Channel | 1985 | 23,000 | Good |
| US-1 (SR 5) over Whale Harbor | 1951 | 20,700 | Good |
| SR-5 (US-1) over Snake Creek Canal | 1981 | 20,700 | Fair |
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.