US Bridges

I-275 (SR-93) over Osborne Avenue

Fair

Hillsborough County, Florida · 0.5 MI N of SR-574 (mlk) · Structure no. 100209

Built
1966
59 years old, rebuilt 2024
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
140 ft
3 main spans
Daily traffic
158,000
2022 count
Owner
State
State Highway Agency

About this bridge

I-275 (SR-93) over Osborne Avenue is a prestressed concrete stringer/multi-beam or girder carrying I-275 (SR-93) over Osborne Avenue in Hillsborough County, Florida. It was built in 1966 and reconstructed in 2024, so it is 59 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 158,000 vehicles a day, roughly 6% of them trucks, projected to reach 274,130 by 2044. The structure is 140 ft (42.7 m) long and 185 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI-275 (SR-93)
CrossesOsborne Avenue
Location0.5 MI N of SR-574 (mlk)
RouteInterstate 275
CountyHillsborough County
StateFlorida
Coordinates27.98876, -82.45363
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.8 US tons
Inventory rating46.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length140 ft (42.7 m)
Longest span64 ft (19.5 m)
Deck width185 ft (56.3 m)
Roadway width132 ft (40.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic158,000 (2022)
Projected traffic274,130 by 2044
Trucks6%
Lanes on structure6
Traffic directionTwo-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 (SR-93) over Osborne Avenue built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2024.

What condition is I-275 (SR-93) over Osborne Avenue 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 August 2024.

How much traffic does I-275 (SR-93) over Osborne Avenue carry?

About 158,000 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is I-275 (SR-93) over Osborne Avenue?

The structure is 140 ft (42.7 m) long with a longest span of 64 ft (19.5 m) and a deck 185 ft wide.

Who owns I-275 (SR-93) over Osborne Avenue?

It is owned by the State Highway Agency.