US Bridges

I-4 WB/I-275 SB over Palm Avenue

Good

Hillsborough County, Florida · 0.2MI W of Nebraska Ave · Structure no. 100649

Built
2004
21 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
144 ft
3 main spans
Daily traffic
6,200
2024 count
Owner
State
State Highway Agency

About this bridge

I-4 WB/I-275 SB over Palm Avenue is a prestressed concrete stringer/multi-beam or girder carrying I-4 WB/I-275 SB over Palm Avenue in Hillsborough County, Florida. It was built in 2004, so it is 21 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 6,200 vehicles a day, roughly 9% of them trucks, projected to reach 10,757 by 2044. The structure is 144 ft (44 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesI-4 WB/I-275 SB
CrossesPalm Avenue
Location0.2MI W of Nebraska Ave
RouteInterstate 4
StateFlorida
Coordinates27.96231, -82.45397
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.
Substructure8 Very GoodNo problems noted.
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 alignment8: Equal to present desirable criteria
Operating rating82 US tons
Inventory rating49.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length144 ft (44 m)
Longest span65 ft (19.7 m)
Deck width30 ft (9 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,200 (2024)
Projected traffic10,757 by 2044
Trucks9%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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-4 WB/I-275 SB over Palm Avenue built?

It was built in 2004, making it 21 years old in 2025.

What condition is I-4 WB/I-275 SB over Palm 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-4 WB/I-275 SB over Palm Avenue carry?

About 6,200 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is I-4 WB/I-275 SB over Palm Avenue?

The structure is 144 ft (44 m) long with a longest span of 65 ft (19.7 m) and a deck 30 ft wide.

Who owns I-4 WB/I-275 SB over Palm Avenue?

It is owned by the State Highway Agency.