US Bridges

I-275 NB over 54th Avenue South

Good

Pinellas County, Florida · 270FT. E of US-19 · Structure no. 150184

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

About this bridge

I-275 NB over 54th Avenue South is a prestressed concrete stringer/multi-beam or girder carrying I-275 NB 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 182 ft (55.4 m) long and 51 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI-275 NB
Crosses54th Avenue South
Location270FT. E of US-19
RouteInterstate 275
StateFlorida
Coordinates27.71913, -82.67853
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.
Superstructure7 GoodSome minor problems.
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.4 US tons
Inventory rating41.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length182 ft (55.4 m)
Longest span110 ft (33.5 m)
Deck width51 ft (15.5 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46,750 (2022)
Projected traffic81,111 by 2044
Trucks6%
Lanes on structure3
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 NB over 54th Avenue South built?

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

What condition is I-275 NB 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 NB over 54th Avenue South carry?

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

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

The structure is 182 ft (55.4 m) long with a longest span of 110 ft (33.5 m) and a deck 51 ft wide.

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

It is owned by the State Highway Agency.