US Bridges

I-75 NB over CR-574 & CSX RR

Good

Hillsborough County, Florida · 3.1MI N of SR-60 · Structure no. 100436

Built
1983
42 years old, rebuilt 2024
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
360 ft
5 main spans
Daily traffic
71,750
2024 count
Owner
State
State Highway Agency

About this bridge

I-75 NB over CR-574 & CSX RR is a prestressed concrete stringer/multi-beam or girder carrying I-75 NB over CR-574 & CSX RR in Hillsborough County, Florida. It was built in 1983 and reconstructed in 2024, so it is 42 years old, older 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 71,750 vehicles a day, roughly 11% of them trucks, projected to reach 124,486 by 2044. The structure is 360 ft (109.8 m) long and 70 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI-75 NB
CrossesCR-574 & CSX RR
Location3.1MI N of SR-60
RouteInterstate 75
CountyHillsborough County
StateFlorida
Coordinates27.97316, -82.32618
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 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.8 US tons
Inventory rating36.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans5
Design loadUnknown
Structure length360 ft (109.8 m)
Longest span91 ft (27.8 m)
Deck width70 ft (21.2 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic71,750 (2024)
Projected traffic124,486 by 2044
Trucks11%
Lanes on structure3
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-75 NB over CR-574 & CSX RR built?

It was built in 1983, making it 42 years old in 2025. It was reconstructed in 2024.

What condition is I-75 NB over CR-574 & CSX RR 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 2023.

How much traffic does I-75 NB over CR-574 & CSX RR carry?

About 71,750 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is I-75 NB over CR-574 & CSX RR?

The structure is 360 ft (109.8 m) long with a longest span of 91 ft (27.8 m) and a deck 70 ft wide.

Who owns I-75 NB over CR-574 & CSX RR?

It is owned by the State Highway Agency.