I-75 NB over Salt Marsh
Manatee County, Florida · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I-75 NB over Salt Marsh in Manatee 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 1980 and reconstructed in 2023, making it 45 years old at the 2025 inventory.
- It carries about 60,250 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 116 of the 255 inventoried bridges in Manatee County rated fair (45.5%); 1 (0.4%) are rated poor.
- 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 → (27.50697, -82.4917)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 7 | Good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 1,569 ft |
| Location | 2.5MI. South of US-301 |
| NBI structure number | 130102 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Florida department of transportation.
Busiest bridges in Manatee County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-75 (SR-93) SB over SR-64 | 1980 | 136,000 | Fair |
| I-75 (SR-93) NB over SR-64 | 1980 | 136,000 | Fair |
| I-75 SB over Salt Marsh | 1980 | 120,500 | Fair |
| I-75 (SR-93) NB over Curiosity Creek | 1980 | 85,000 | Good |
| I-75 SB (SR-93) over Braden River | 1979 | 70,000 | Good |
| I-75 NB (SR-93) over Braden River | 1979 | 70,000 | Good |
All bridges nearby: Manatee County, FL bridge conditions · every bridge in Manatee County · Florida bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.