US Bridges

I-75 SB over Old Big Bend RD

Good

Hillsborough County, Florida · 1.65 MI East of US-41 · Structure no. 100862

Built
2023
2 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
90 ft
1 main span
Daily traffic
17,500
2023 count
Owner
State
State Highway Agency

About this bridge

I-75 SB over Old Big Bend RD is a prestressed concrete stringer/multi-beam or girder carrying I-75 SB over Old Big Bend RD in Hillsborough County, Florida. It was built in 2023, so it is 2 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 17,500 vehicles a day, projected to reach 30,625 by 2042. The structure is 90 ft (27.4 m) long and 47 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesI-75 SB
CrossesOld Big Bend RD
Location1.65 MI East of US-41
RouteInterstate 75
CountyHillsborough County
StateFlorida
Coordinates27.79234, -82.35755
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 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 alignment6: Equal to present minimum criteria
Operating rating59 US tons
Inventory rating37.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length90 ft (27.4 m)
Longest span90 ft (27.4 m)
Deck width47 ft (14.3 m)
Roadway width45 ft (13.6 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic17,500 (2023)
Projected traffic30,625 by 2042
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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-75 SB over Old Big Bend RD built?

It was built in 2023, making it 2 years old in 2025.

What condition is I-75 SB over Old Big Bend 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 January 2024.

How much traffic does I-75 SB over Old Big Bend RD carry?

About 17,500 vehicles per day (2023 count).

How long is I-75 SB over Old Big Bend RD?

The structure is 90 ft (27.4 m) long with a longest span of 90 ft (27.4 m) and a deck 47 ft wide.

Who owns I-75 SB over Old Big Bend RD?

It is owned by the State Highway Agency.