I-4 WB (sr 400) over 15th Street
FairHillsborough County, Florida · 0.5 MI E of I-275 · Structure no. 100149
- Built
- 1962
- 63 years old, rebuilt 2007
- Condition
- Fair
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 134 ft
- 3 main spans
- Daily traffic
- 86,000
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
I-4 WB (sr 400) over 15th Street is a prestressed concrete stringer/multi-beam or girder carrying I-4 WB (sr 400) over 15th Street in Hillsborough County, Florida. It was built in 1962 and reconstructed in 2007, so it is 63 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 86,000 vehicles a day, roughly 11% of them trucks, projected to reach 149,210 by 2044. The structure is 134 ft (40.8 m) long and 84 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-4 WB (sr 400) over 15th Street built?
It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2007.
What condition is I-4 WB (sr 400) over 15th Street 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 2024.
How much traffic does I-4 WB (sr 400) over 15th Street carry?
About 86,000 vehicles per day (2022 count), of which roughly 11% are trucks.
How long is I-4 WB (sr 400) over 15th Street?
The structure is 134 ft (40.8 m) long with a longest span of 51 ft (15.5 m) and a deck 84 ft wide.
Who owns I-4 WB (sr 400) over 15th Street?
It is owned by the State Highway Agency.