US27 SR20 over St. Marks Rvr
FairLeon County, Florida · 1.5 MI W of Jefferson CO · Structure no. 550065
- Built
- 1954
- 71 years old, rebuilt 1992
- Condition
- Fair
- inspected June 2023
- Type
- Tee Beam
- Concrete
- Length
- 392 ft
- 17 main spans
- Daily traffic
- 2,700
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US27 SR20 over St. Marks Rvr is a concrete tee beam carrying US27 SR20 over St. Marks Rvr in Leon County, Florida. It was built in 1954 and reconstructed in 1992, so it is 71 years old, older 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 2,700 vehicles a day, roughly 16% of them trucks, projected to reach 4,684 by 2044. The structure is 392 ft (119.5 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 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 US27 SR20 over St. Marks Rvr built?
It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1992.
What condition is US27 SR20 over St. Marks Rvr 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 June 2023.
How much traffic does US27 SR20 over St. Marks Rvr carry?
About 2,700 vehicles per day (2022 count), of which roughly 16% are trucks.
How long is US27 SR20 over St. Marks Rvr?
The structure is 392 ft (119.5 m) long with a longest span of 23 ft (7 m) and a deck 43 ft wide.
Who owns US27 SR20 over St. Marks Rvr?
It is owned by the State Highway Agency.