US Bridges

I-275 SB over 54th Avenue South

Good

Pinellas County, Florida · 264FT. E of US-19 · Structure no. 150183

Built
1984
41 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
203 ft
3 main spans
Daily traffic
46,750
2022 count
Owner
State
State Highway Agency

About this bridge

I-275 SB over 54th Avenue South is a prestressed concrete stringer/multi-beam or girder carrying I-275 SB over 54th Avenue South in Pinellas County, Florida. It was built in 1984, so it is 41 years old, younger 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 46,750 vehicles a day, roughly 6% of them trucks, projected to reach 81,111 by 2044. The structure is 203 ft (61.9 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI-275 SB
Crosses54th Avenue South
Location264FT. E of US-19
RouteInterstate 275
StateFlorida
Coordinates27.71916, -82.67767
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.1 US tons
Inventory rating37.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length203 ft (61.9 m)
Longest span118 ft (35.9 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46,750 (2022)
Projected traffic81,111 by 2044
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-275 SB over 54th Avenue South built?

It was built in 1984, making it 41 years old in 2025.

What condition is I-275 SB over 54th Avenue 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 July 2023.

How much traffic does I-275 SB over 54th Avenue South carry?

About 46,750 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is I-275 SB over 54th Avenue South?

The structure is 203 ft (61.9 m) long with a longest span of 118 ft (35.9 m) and a deck 43 ft wide.

Who owns I-275 SB over 54th Avenue South?

It is owned by the State Highway Agency.