US Bridges

I-4WB I-275SB Ramp over I-275 (SR-93)

Good

Hillsborough County, Florida · I-4 I-275 Interchange · Structure no. 100655

Built
2005
20 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
163 ft
1 main span
Daily traffic
49,500
2024 count
Owner
State
State Highway Agency

About this bridge

I-4WB I-275SB Ramp over I-275 (SR-93) is a steel stringer/multi-beam or girder carrying I-4WB I-275SB Ramp over I-275 (SR-93) in Hillsborough County, Florida. It was built in 2005, so it is 20 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 49,500 vehicles a day, roughly 7% of them trucks, projected to reach 61,875 by 2044. The structure is 163 ft (49.7 m) long and 60 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesI-4WB I-275SB Ramp
CrossesI-275 (SR-93)
LocationI-4 I-275 Interchange
RouteInterstate 4
CountyHillsborough County
StateFlorida
Coordinates27.96473, -82.45255
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.5 US tons
Inventory rating29.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length163 ft (49.7 m)
Longest span163 ft (49.7 m)
Deck width60 ft (18.3 m)
Roadway width58 ft (17.6 m)
Vertical clearance over deck20 ft (6 m)

Traffic and service

Average daily traffic49,500 (2024)
Projected traffic61,875 by 2044
Trucks7%
Lanes on structure2
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-4WB I-275SB Ramp over I-275 (SR-93) built?

It was built in 2005, making it 20 years old in 2025.

What condition is I-4WB I-275SB Ramp over I-275 (SR-93) 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 2024.

How much traffic does I-4WB I-275SB Ramp over I-275 (SR-93) carry?

About 49,500 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is I-4WB I-275SB Ramp over I-275 (SR-93)?

The structure is 163 ft (49.7 m) long with a longest span of 163 ft (49.7 m) and a deck 60 ft wide.

Who owns I-4WB I-275SB Ramp over I-275 (SR-93)?

It is owned by the State Highway Agency.