US Bridges

I-75 SB (SR-93) over SR-47

Good

Columbia County, Florida · I-75 SB over SR-47 · Structure no. 290059

Built
1962
63 years old, rebuilt 1997
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
301 ft
6 main spans
Daily traffic
27,250
2022 count
Owner
State
State Highway Agency

About this bridge

I-75 SB (SR-93) over SR-47 is a prestressed concrete stringer/multi-beam or girder carrying I-75 SB (SR-93) over SR-47 in Columbia County, Florida. It was built in 1962 and reconstructed in 1997, so it is 63 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 27,250 vehicles a day, roughly 30% of them trucks, projected to reach 47,279 by 2044. The structure is 301 ft (91.7 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-93)
CrossesSR-47
LocationI-75 SB over SR-47
RouteInterstate 75
CountyColumbia County
StateFlorida
Coordinates30.11759, -82.65594
Functional classRural 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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.4 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadUnknown
Structure length301 ft (91.7 m)
Longest span55 ft (16.8 m)
Deck width59 ft (17.9 m)
Roadway width56 ft (17 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,250 (2022)
Projected traffic47,279 by 2044
Trucks30%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-75 SB (SR-93) over SR-47 built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1997.

What condition is I-75 SB (SR-93) over SR-47 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 August 2023.

How much traffic does I-75 SB (SR-93) over SR-47 carry?

About 27,250 vehicles per day (2022 count), of which roughly 30% are trucks.

How long is I-75 SB (SR-93) over SR-47?

The structure is 301 ft (91.7 m) long with a longest span of 55 ft (16.8 m) and a deck 59 ft wide.

Who owns I-75 SB (SR-93) over SR-47?

It is owned by the State Highway Agency.