US Bridges

I-4 EB (SR-400) over 34th Street

Good

Hillsborough County, Florida · 1.1MI West of US-41 · Structure no. 100665

Built
2005
20 years old
Condition
Good
inspected June 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
98 ft
1 main span
Daily traffic
83,250
2022 count
Owner
State
State Highway Agency

About this bridge

I-4 EB (SR-400) over 34th Street is a prestressed concrete box beam or girders - single or spread carrying I-4 EB (SR-400) over 34th Street 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 83,250 vehicles a day, roughly 10% of them trucks, projected to reach 144,439 by 2044. The structure is 98 ft (30 m) long and 84 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI-4 EB (SR-400)
Crosses34th Street
Location1.1MI West of US-41
RouteInterstate 4
StateFlorida
Coordinates27.96467, -82.42237
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 alignment8: Equal to present desirable criteria
Operating rating76.6 US tons
Inventory rating47.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length98 ft (30 m)
Longest span98 ft (30 m)
Deck width84 ft (25.5 m)
Roadway width81 ft (24.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic83,250 (2022)
Projected traffic144,439 by 2044
Trucks10%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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-4 EB (SR-400) over 34th Street built?

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

What condition is I-4 EB (SR-400) over 34th Street 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 EB (SR-400) over 34th Street carry?

About 83,250 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is I-4 EB (SR-400) over 34th Street?

The structure is 98 ft (30 m) long with a longest span of 98 ft (30 m) and a deck 84 ft wide.

Who owns I-4 EB (SR-400) over 34th Street?

It is owned by the State Highway Agency.