SR91 SB Tpk 144.6 over Drainage Canal
St. Lucie County, Florida · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR91 SB Tpk 144.6 over Drainage Canal in St. Lucie County, Florida, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 8 (very good condition) on the 0-9 scale.
- It was built in 1956, making it 69 years old at the 2025 inventory.
- It carries about 23,450 vehicles a day (traffic count year 2022).
- It is one of 109 of the 150 inventoried bridges in St. Lucie County rated good (72.7%); 4 (2.7%) are rated poor.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (27.29355, -80.36977)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 8 | Very good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 21 ft |
| Location | 0.74 Mi N of St Lucie Blv |
| NBI structure number | 940104 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Florida department of transportation.
Busiest bridges in St. Lucie County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Port St. Lucie Bld over SR-91 (Florida Turnpike) | 1995 | 50,000 | Good |
| SB I-95 (SR-9) over Gatlin Blvd | 1982 | 49,750 | Fair |
| NB I-95 (SR-9) over Gatlin Blvd | 1982 | 49,750 | Good |
| SB I-95 (SR-9) over SW Cadima St & C24 Canal | 1982 | 49,750 | Good |
| NB I-95 (SR-9) over Galiano Rd & C-24 Canal | 1982 | 49,750 | Good |
| Crosstown Parkway over St Lucie River | 2019 | 47,000 | Good |
All bridges nearby: St. Lucie County, FL bridge conditions · every bridge in St. Lucie County · Florida bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.