US Bridges

I-4 on Ramp over I-4 (SR-400) EB

Good

Hillsborough County, Florida · 0.9 MI North of SR-618 · Structure no. 100733

Built
2013
12 years old
Condition
Good
inspected November 2023
Type
Segmental Box Girder
Prestressed Concrete Continuous
Length
952 ft
6 main spans
Daily traffic
9,250
2024 count
Owner
State
State Highway Agency

About this bridge

I-4 on Ramp over I-4 (SR-400) EB is a prestressed concrete continuous segmental box girder carrying I-4 on Ramp over I-4 (SR-400) EB in Hillsborough County, Florida. It was built in 2013, so it is 12 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 9,250 vehicles a day, roughly 11% of them trucks, projected to reach 16,049 by 2044. The structure is 952 ft (290.2 m) long and 45 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesI-4 on Ramp
CrossesI-4 (SR-400) EB
Location0.9 MI North of SR-618
RouteState Highway 4
CountyHillsborough County
StateFlorida
Coordinates27.96386, -82.42569
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionNovember 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 rating59.7 US tons
Inventory rating38.9 US tons

Structure

Structure typeSegmental Box Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHL 93
Structure length952 ft (290.2 m)
Longest span202 ft (61.5 m)
Deck width45 ft (13.8 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,250 (2024)
Projected traffic16,049 by 2044
Trucks11%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a toll 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 on Ramp over I-4 (SR-400) EB built?

It was built in 2013, making it 12 years old in 2025.

What condition is I-4 on Ramp over I-4 (SR-400) EB 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 November 2023.

How much traffic does I-4 on Ramp over I-4 (SR-400) EB carry?

About 9,250 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is I-4 on Ramp over I-4 (SR-400) EB?

The structure is 952 ft (290.2 m) long with a longest span of 202 ft (61.5 m) and a deck 45 ft wide.

Who owns I-4 on Ramp over I-4 (SR-400) EB?

It is owned by the State Highway Agency.