US Bridges

I-275 NB to I-4 EB over SR-45 (nebraska Avenue)

Good

Hillsborough County, Florida · At Intersection I-4 I-275 · Structure no. 100146

Built
1963
62 years old, rebuilt 2005
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
211 ft
3 main spans
Daily traffic
76,500
2022 count
Owner
State
State Highway Agency

About this bridge

I-275 NB to I-4 EB over SR-45 (nebraska Avenue) is a prestressed concrete stringer/multi-beam or girder carrying I-275 NB to I-4 EB over SR-45 (nebraska Avenue) in Hillsborough County, Florida. It was built in 1963 and reconstructed in 2005, so it is 62 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 76,500 vehicles a day, roughly 7% of them trucks, projected to reach 95,625 by 2042. The structure is 211 ft (64.2 m) long and 58 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesI-275 NB to I-4 EB
CrossesSR-45 (nebraska Avenue)
LocationAt Intersection I-4 I-275
RouteInterstate 4
CountyHillsborough County
StateFlorida
Coordinates27.96416, -82.45122
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 inspectionJune 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 alignment7: Better than present minimum criteria
Operating rating56.7 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length211 ft (64.2 m)
Longest span103 ft (31.4 m)
Deck width58 ft (17.7 m)
Roadway width55 ft (16.8 m)
Vertical clearance over deck18 ft (5.4 m)

Traffic and service

Average daily traffic76,500 (2022)
Projected traffic95,625 by 2042
Trucks7%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.9 mi (3 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 to I-4 EB over SR-45 (nebraska Avenue) built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2005.

What condition is I-275 NB to I-4 EB over SR-45 (nebraska Avenue) 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 June 2024.

How much traffic does I-275 NB to I-4 EB over SR-45 (nebraska Avenue) carry?

About 76,500 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is I-275 NB to I-4 EB over SR-45 (nebraska Avenue)?

The structure is 211 ft (64.2 m) long with a longest span of 103 ft (31.4 m) and a deck 58 ft wide.

Who owns I-275 NB to I-4 EB over SR-45 (nebraska Avenue)?

It is owned by the State Highway Agency.