US-1 SB (SR-15) over Branch of Mills Creek
FairNassau County, Florida · 5.5 Mi. N. of Callahan · Structure no. 740110
- Built
- 1997
- 28 years old
- Condition
- Fair
- inspected July 2023
- Type
- Slab
- Concrete Continuous
- Length
- 120 ft
- 6 main spans
- Daily traffic
- 7,850
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US-1 SB (SR-15) over Branch of Mills Creek is a concrete continuous slab carrying US-1 SB (SR-15) over Branch of Mills Creek in Nassau County, Florida. It was built in 1997, so it is 28 years old, younger 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 7,850 vehicles a day, roughly 14% of them trucks, projected to reach 13,620 by 2044. The structure is 120 ft (36.6 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 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 | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US-1 SB (SR-15) over Branch of Mills Creek built?
It was built in 1997, making it 28 years old in 2025.
What condition is US-1 SB (SR-15) over Branch of Mills Creek 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 July 2023.
How much traffic does US-1 SB (SR-15) over Branch of Mills Creek carry?
About 7,850 vehicles per day (2022 count), of which roughly 14% are trucks.
How long is US-1 SB (SR-15) over Branch of Mills Creek?
The structure is 120 ft (36.6 m) long with a longest span of 20 ft (6.1 m) and a deck 43 ft wide.
Who owns US-1 SB (SR-15) over Branch of Mills Creek?
It is owned by the State Highway Agency.