WB Martin Downs Bl over S Fork St. Lucie River
FairMartin County, Florida · 0.34 MI W of Kanner HWY · Structure no. 890143
- Built
- 1991
- 34 years old
- Condition
- Fair
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 1,847 ft
- 16 main spans
- Daily traffic
- 18,750
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
WB Martin Downs Bl over S Fork St. Lucie River is a prestressed concrete stringer/multi-beam or girder carrying WB Martin Downs Bl over S Fork St. Lucie River in Martin County, Florida. It was built in 1991, so it is 34 years old, younger than the Florida average of 41.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 18,750 vehicles a day, roughly 6% of them trucks, projected to reach 32,531 by 2042. The structure is 1,847 ft (563 m) long and 52 ft wide. If it were closed, the detour would be 0.6 mi (1 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was WB Martin Downs Bl over S Fork St. Lucie River built?
It was built in 1991, making it 34 years old in 2025.
What condition is WB Martin Downs Bl over S Fork St. Lucie River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.
How much traffic does WB Martin Downs Bl over S Fork St. Lucie River carry?
About 18,750 vehicles per day (2024 count), of which roughly 6% are trucks.
How long is WB Martin Downs Bl over S Fork St. Lucie River?
The structure is 1,847 ft (563 m) long with a longest span of 129 ft (39.3 m) and a deck 52 ft wide.
Who owns WB Martin Downs Bl over S Fork St. Lucie River?
It is owned by the State Highway Agency.