US Bridges

I-4 EB (SR-400) over M.L. King Blvd.

Good

Hillsborough County, Florida · 1.5 MI West of US-301 · Structure no. 100587

Built
2001
24 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
269 ft
2 main spans
Daily traffic
73,500
2022 count
Owner
State
State Highway Agency

About this bridge

I-4 EB (SR-400) over M.L. King Blvd. is a prestressed concrete stringer/multi-beam or girder carrying I-4 EB (SR-400) over M.L. King Blvd. in Hillsborough County, Florida. It was built in 2001, so it is 24 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 73,500 vehicles a day, roughly 11% of them trucks, projected to reach 91,875 by 2042. The structure is 269 ft (81.9 m) long and 59 ft wide.

Location

Open in Google Maps
CarriesI-4 EB (SR-400)
CrossesM.L. King Blvd.
Location1.5 MI West of US-301
RouteInterstate 4
CountyHillsborough County
StateFlorida
Coordinates27.9815, -82.38389
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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating64 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length269 ft (81.9 m)
Longest span135 ft (41 m)
Deck width59 ft (18 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic73,500 (2022)
Projected traffic91,875 by 2042
Trucks11%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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 M.L. King Blvd. built?

It was built in 2001, making it 24 years old in 2025.

What condition is I-4 EB (SR-400) over M.L. King Blvd. 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 M.L. King Blvd. carry?

About 73,500 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is I-4 EB (SR-400) over M.L. King Blvd.?

The structure is 269 ft (81.9 m) long with a longest span of 135 ft (41 m) and a deck 59 ft wide.

Who owns I-4 EB (SR-400) over M.L. King Blvd.?

It is owned by the State Highway Agency.