I-275 SB over 18th Ave. South
GoodPinellas County, Florida · 2.3MI North of SR-682 · Structure no. 150156
- Built
- 1982
- 43 years old
- Condition
- Good
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 166 ft
- 3 main spans
- Daily traffic
- 51,750
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-275 SB over 18th Ave. South is a prestressed concrete stringer/multi-beam or girder carrying I-275 SB over 18th Ave. South in Pinellas County, Florida. It was built in 1982, so it is 43 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 51,750 vehicles a day, roughly 7% of them trucks, projected to reach 89,786 by 2042. The structure is 166 ft (50.7 m) long and 79 ft wide.
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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-275 SB over 18th Ave. South built?
It was built in 1982, making it 43 years old in 2025.
What condition is I-275 SB over 18th Ave. South 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 I-275 SB over 18th Ave. South carry?
About 51,750 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is I-275 SB over 18th Ave. South?
The structure is 166 ft (50.7 m) long with a longest span of 92 ft (27.9 m) and a deck 79 ft wide.
Who owns I-275 SB over 18th Ave. South?
It is owned by the State Highway Agency.