US Bridges

I-4 EB (sr 400) over 15th Street

Good

Hillsborough County, Florida · 0.5 MI East of I-275 · Structure no. 100657

Built
2006
19 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
134 ft
3 main spans
Daily traffic
86,000
2022 count
Owner
State
State Highway Agency

About this bridge

I-4 EB (sr 400) over 15th Street is a prestressed concrete stringer/multi-beam or girder carrying I-4 EB (sr 400) over 15th Street in Hillsborough County, Florida. It was built in 2006, so it is 19 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 86,000 vehicles a day, roughly 11% of them trucks, projected to reach 149,210 by 2044. The structure is 134 ft (40.7 m) long and 78 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI-4 EB (sr 400)
Crosses15th Street
Location0.5 MI East of I-275
RouteInterstate 4
StateFlorida
Coordinates27.96472, -82.44297
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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.6 US tons
Inventory rating40.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length134 ft (40.7 m)
Longest span51 ft (15.4 m)
Deck width78 ft (23.9 m)
Roadway width67 ft (20.3 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic86,000 (2022)
Projected traffic149,210 by 2044
Trucks11%
Lanes on structure5
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 15th Street built?

It was built in 2006, making it 19 years old in 2025.

What condition is I-4 EB (sr 400) over 15th 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 15th Street carry?

About 86,000 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is I-4 EB (sr 400) over 15th Street?

The structure is 134 ft (40.7 m) long with a longest span of 51 ft (15.4 m) and a deck 78 ft wide.

Who owns I-4 EB (sr 400) over 15th Street?

It is owned by the State Highway Agency.