US Bridges

I-75 SB (SR-93A) over Harney RD (CR-580)

Good

Hillsborough County, Florida · 2.6MI North of I-4 · Structure no. 100475

Built
1983
42 years old, rebuilt 2014
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
167 ft
3 main spans
Daily traffic
78,250
2023 count
Owner
State
State Highway Agency

About this bridge

I-75 SB (SR-93A) over Harney RD (CR-580) is a prestressed concrete stringer/multi-beam or girder carrying I-75 SB (SR-93A) over Harney RD (CR-580) in Hillsborough County, Florida. It was built in 1983 and reconstructed in 2014, 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 78,250 vehicles a day, roughly 14% of them trucks, projected to reach 97,813 by 2042. The structure is 167 ft (51 m) long and 59 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI-75 SB (SR-93A)
CrossesHarney RD (CR-580)
Location2.6MI North of I-4
RouteInterstate 75
CountyHillsborough County
StateFlorida
Coordinates28.03451, -82.34739
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.
Substructure8 Very GoodNo problems noted.
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 rating42.8 US tons
Inventory rating33.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length167 ft (51 m)
Longest span89 ft (27 m)
Deck width59 ft (18 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic78,250 (2023)
Projected traffic97,813 by 2042
Trucks14%
Lanes on structure3
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$9,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-75 SB (SR-93A) over Harney RD (CR-580) built?

It was built in 1983, making it 42 years old in 2025. It was reconstructed in 2014.

What condition is I-75 SB (SR-93A) over Harney RD (CR-580) 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 SB (SR-93A) over Harney RD (CR-580) carry?

About 78,250 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is I-75 SB (SR-93A) over Harney RD (CR-580)?

The structure is 167 ft (51 m) long with a longest span of 89 ft (27 m) and a deck 59 ft wide.

Who owns I-75 SB (SR-93A) over Harney RD (CR-580)?

It is owned by the State Highway Agency.