US27 SR20 over St. Marks Rvr
Leon County, Florida · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US27 SR20 over St. Marks Rvr in Leon County, Florida, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1954 and reconstructed in 1992, making it 71 years old at the 2025 inventory.
- It carries about 2,700 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 97 of the 166 inventoried bridges in Leon County rated fair (58.4%); 9 (5.4%) 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 June 2023, 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 → (30.42067, -84.1014)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 392 ft |
| Location | 1.5 MI W of Jefferson Co |
| NBI structure number | 550065 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | U: unknown foundation, not evaluated for scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Florida department of transportation.
Busiest bridges in Leon County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I10 SR8 over Pond Creek | 1972 | 69,666 | Fair |
| US319 SR261 over I10 SR8 | 1973 | 56,500 | Good |
| US319 SR261 over Capital Circle Ck | 1993 | 56,500 | Good |
| US319 SR261 over Perkins Branch | 1968 | 46,000 | Fair |
| US319 SR261 over Fg&a RR | 1999 | 46,000 | Good |
| US27 SR63 over Megginnis Arm | 1949 | 36,000 | Fair |
All bridges nearby: Leon County, FL bridge conditions · every bridge in Leon County · Florida bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.