SR91 SB Tpk 158.6 over Canal L-20
St. Lucie County, Florida · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR91 SB Tpk 158.6 over Canal L-20 in St. Lucie County, Florida, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1963 and reconstructed in 1992, making it 62 years old at the 2025 inventory.
- It carries about 18,350 vehicles a day (traffic count year 2022).
- It is one of 37 of the 150 inventoried bridges in St. Lucie County rated fair (24.7%); 4 (2.7%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated January 2024, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (27.47757, -80.45086)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 291 ft |
| Location | 2.53 Mi North of Cr-68 |
| NBI structure number | 940058 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | January 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
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.