Seaport Causeway over Biscayne Bay
Fair Condition62 years old1 vehicles/day
Location
| State | Florida |
| County | Miami-Dade |
| Location | Entrance To Port Of Miami |
| Carries | Seaport Causeway |
| Crosses | Biscayne Bay |
| Coordinates | 25.77921, -80.18225 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel |
| Design | Movable - Bascule |
| Total Length | 2238.8 ft (682.4 m) |
| Max Span | 106.0 ft (32.3 m) |
| Deck Width | 37.4 ft (11.4 m) |
| Deck Area | 7779.4 sq m |
| Main Spans | 1 |
| Year Built | 1964 |
Traffic
| Avg Daily Traffic | 1 (2024) |
| Truck Traffic | 50% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 124 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 874998 |