SR934 WB (870550) over East Biscayne Bay
Miami-Dade County, Florida · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR934 WB (870550) over East Biscayne Bay in Miami-Dade County, Florida, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- It was built in 1971, making it 54 years old at the 2025 inventory.
- It carries about 22,500 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (25.84863, -80.15624)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 4 | Poor condition |
| Superstructure | 4 | Poor condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete slab |
| Length | about 509 ft |
| Location | E. of North Bay Island |
| NBI structure number | 870084 |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Florida department of transportation.
All bridges nearby: Miami-Dade County, FL bridge conditions · Florida bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.