US Bridges

I-275 NB & SB over SR-580 and CSX RR

Good

Hillsborough County, Florida · 0.9 Mi. N of Hills. River · Structure no. 100226

Built
1967
58 years old, rebuilt 2001
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
273 ft
4 main spans
Daily traffic
151,500
2024 count
Owner
State
State Highway Agency

About this bridge

I-275 NB & SB over SR-580 and CSX RR is a prestressed concrete stringer/multi-beam or girder carrying I-275 NB & SB over SR-580 and CSX RR in Hillsborough County, Florida. It was built in 1967 and reconstructed in 2001, so it is 58 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 151,500 vehicles a day, roughly 6% of them trucks, projected to reach 262,852 by 2044. The structure is 273 ft (83.2 m) long and 132 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesI-275 NB & SB
CrossesSR-580 and CSX RR
Location0.9 Mi. N of Hills. River
RouteInterstate 275
CountyHillsborough County
StateFlorida
Coordinates28.03287, -82.45491
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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.1 US tons
Inventory rating28.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length273 ft (83.2 m)
Longest span94 ft (28.7 m)
Deck width132 ft (40.2 m)
Roadway width126 ft (38.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic151,500 (2024)
Projected traffic262,852 by 2044
Trucks6%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.9 mi (3 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-275 NB & SB over SR-580 and CSX RR built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2001.

What condition is I-275 NB & SB over SR-580 and 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 July 2024.

How much traffic does I-275 NB & SB over SR-580 and CSX RR carry?

About 151,500 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is I-275 NB & SB over SR-580 and CSX RR?

The structure is 273 ft (83.2 m) long with a longest span of 94 ft (28.7 m) and a deck 132 ft wide.

Who owns I-275 NB & SB over SR-580 and CSX RR?

It is owned by the State Highway Agency.