Keysville Road over North Prong Alafia River
GoodHillsborough County, Florida · 1.7MI East of CR-39 · Structure no. 100275
- Built
- 1965
- 60 years old
- Condition
- Good
- inspected December 2023
- Type
- Slab
- Concrete
- Length
- 359 ft
- 12 main spans
- Daily traffic
- 3,200
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Keysville Road over North Prong Alafia River is a concrete slab carrying Keysville Road over North Prong Alafia River in Hillsborough County, Florida. It was built in 1965, so it is 60 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 3,200 vehicles a day, roughly 5% of them trucks, projected to reach 4,000 by 2042. The structure is 359 ft (109.5 m) long and 26 ft wide. If it were closed, the detour would be 6.8 mi (11 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| 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 Keysville Road over North Prong Alafia River built?
It was built in 1965, making it 60 years old in 2025.
What condition is Keysville Road over North Prong Alafia River 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 December 2023.
How much traffic does Keysville Road over North Prong Alafia River carry?
About 3,200 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is Keysville Road over North Prong Alafia River?
The structure is 359 ft (109.5 m) long with a longest span of 30 ft (9.2 m) and a deck 26 ft wide.
Who owns Keysville Road over North Prong Alafia River?
It is owned by the County Highway Agency.