WB Martin Downs Bl over S Fork St. Lucie River
Fair Condition35 years old18,750 vehicles/day
Location
| State | Florida |
| County | Martin |
| Location | 0.34 Mi W Of Kanner HWY |
| Carries | WB Martin Downs Bl |
| Crosses | S Fork St. Lucie River |
| Coordinates | 27.17429, -80.26097 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 1847.1 ft (563 m) |
| Max Span | 128.9 ft (39.3 m) |
| Deck Width | 51.8 ft (15.8 m) |
| Deck Area | 8895.4 sq m |
| Main Spans | 16 |
| Year Built | 1991 |
Traffic
| Avg Daily Traffic | 18,750 (2024) |
| Truck Traffic | 6% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 890143 |