US Bridges

I-275SB I-4EB Ramp over I-4 WB I-275 US-41

Good

Hillsborough County, Florida · I-275/I-4 Interchange · Structure no. 100654

Built
2004
21 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,069 ft
7 main spans
Daily traffic
24,500
2023 count
Owner
State
State Highway Agency

About this bridge

I-275SB I-4EB Ramp over I-4 WB I-275 US-41 is a steel continuous stringer/multi-beam or girder carrying I-275SB I-4EB Ramp over I-4 WB I-275 US-41 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 24,500 vehicles a day, roughly 12% of them trucks, projected to reach 42,508 by 2042. The structure is 1,069 ft (325.7 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesI-275SB I-4EB Ramp
CrossesI-4 WB I-275 US-41
LocationI-275/I-4 Interchange
RouteInterstate 275
CountyHillsborough County
StateFlorida
Coordinates27.96488, -82.45318
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 inspectionJuly 2023
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 rating42.8 US tons
Inventory rating33.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length1,069 ft (325.7 m)
Longest span206 ft (62.8 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,500 (2023)
Projected traffic42,508 by 2042
Trucks12%
Lanes on structure1
Traffic directionOne-way traffic
CarriesThird level (interchange)
CrossesHighway
Detour if closed3.1 mi (5 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-275SB I-4EB Ramp over I-4 WB I-275 US-41 built?

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

What condition is I-275SB I-4EB Ramp over I-4 WB I-275 US-41 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-275SB I-4EB Ramp over I-4 WB I-275 US-41 carry?

About 24,500 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is I-275SB I-4EB Ramp over I-4 WB I-275 US-41?

The structure is 1,069 ft (325.7 m) long with a longest span of 206 ft (62.8 m) and a deck 30 ft wide.

Who owns I-275SB I-4EB Ramp over I-4 WB I-275 US-41?

It is owned by the State Highway Agency.