US Bridges

I-4 EB over SR-39 & RR & Frontage RD

Good

Hillsborough County, Florida · 0.5MI E of N Alexander ST · Structure no. 100606

Built
1999
26 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
395 ft
1 main span
Daily traffic
62,750
2024 count
Owner
State
State Highway Agency

About this bridge

I-4 EB over SR-39 & RR & Frontage RD is a steel stringer/multi-beam or girder carrying I-4 EB over SR-39 & RR & Frontage RD in Hillsborough County, Florida. It was built in 1999, so it is 26 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 62,750 vehicles a day, roughly 11% of them trucks, projected to reach 108,871 by 2044. The structure is 395 ft (120.5 m) long and 88 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI-4 EB
CrossesSR-39 & RR & Frontage RD
Location0.5MI E of N Alexander ST
RouteInterstate 4
CountyHillsborough County
StateFlorida
Coordinates28.03502, -82.12565
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 inspectionOctober 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 rating61.7 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20 + Mod
Structure length395 ft (120.5 m)
Longest span219 ft (66.8 m)
Deck width88 ft (26.9 m)
Roadway width83 ft (25.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic62,750 (2024)
Projected traffic108,871 by 2044
Trucks11%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
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 over SR-39 & RR & Frontage RD built?

It was built in 1999, making it 26 years old in 2025.

What condition is I-4 EB over SR-39 & RR & Frontage RD 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 October 2024.

How much traffic does I-4 EB over SR-39 & RR & Frontage RD carry?

About 62,750 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is I-4 EB over SR-39 & RR & Frontage RD?

The structure is 395 ft (120.5 m) long with a longest span of 219 ft (66.8 m) and a deck 88 ft wide.

Who owns I-4 EB over SR-39 & RR & Frontage RD?

It is owned by the State Highway Agency.