US Bridges

I-75 NB (SR-93A) over CSX RR

Good

Hillsborough County, Florida · 0.6MI North of SR-60 · Structure no. 100471

Built
1983
42 years old, rebuilt 2020
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
149 ft
3 main spans
Daily traffic
71,750
2023 count
Owner
State
State Highway Agency

About this bridge

I-75 NB (SR-93A) over CSX RR is a prestressed concrete stringer/multi-beam or girder carrying I-75 NB (SR-93A) over CSX RR in Hillsborough County, Florida. It was built in 1983 and reconstructed in 2020, 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 2042. The structure is 149 ft (45.3 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 NB (SR-93A)
CrossesCSX RR
Location0.6MI North of SR-60
RouteInterstate 75
CountyHillsborough County
StateFlorida
Coordinates27.95011, -82.32801
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.9 US tons
Inventory rating54 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length149 ft (45.3 m)
Longest span50 ft (15.1 m)
Deck width59 ft (18 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic71,750 (2023)
Projected traffic124,486 by 2042
Trucks11%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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 (SR-93A) over CSX RR built?

It was built in 1983, making it 42 years old in 2025. It was reconstructed in 2020.

What condition is I-75 NB (SR-93A) over 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 (SR-93A) over CSX RR carry?

About 71,750 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is I-75 NB (SR-93A) over CSX RR?

The structure is 149 ft (45.3 m) long with a longest span of 50 ft (15.1 m) and a deck 59 ft wide.

Who owns I-75 NB (SR-93A) over CSX RR?

It is owned by the State Highway Agency.