SR 20 over Mill Branch
GoodLiberty County, Florida · 2.42 Mi. E. of SR-12 · Structure no. 560014
- Built
- 1937
- 88 years old
- Condition
- Good
- inspected October 2023
- Type
- Culvert
- Concrete
- Length
- 44 ft
- 4 main spans
- Daily traffic
- 4,500
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
SR 20 over Mill Branch is a concrete culvert carrying SR 20 over Mill Branch in Liberty County, Florida. It was built in 1937, so it is 88 years old, older than the Florida average of 41.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 4,500 vehicles a day, roughly 17% of them trucks, projected to reach 7,808 by 2044. The structure is 44 ft (13.3 m) long. If it were closed, the detour would be 29.2 mi (47 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 20 over Mill Branch built?
It was built in 1937, making it 88 years old in 2025.
What condition is SR 20 over Mill Branch in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.
How much traffic does SR 20 over Mill Branch carry?
About 4,500 vehicles per day (2022 count), of which roughly 17% are trucks.
How long is SR 20 over Mill Branch?
The structure is 44 ft (13.3 m) long with a longest span of 11 ft (3.3 m).
Who owns SR 20 over Mill Branch?
It is owned by the State Highway Agency.