US Bridges

SR-143 over I-75 SR-93

Good

Hamilton County, Florida · SR-143 over I-75 · Structure no. 320018

Built
1961
64 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
225 ft
4 main spans
Daily traffic
1,350
2022 count
Owner
State
State Highway Agency

About this bridge

SR-143 over I-75 SR-93 is a prestressed concrete stringer/multi-beam or girder carrying SR-143 over I-75 SR-93 in Hamilton County, Florida. It was built in 1961, so it is 64 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 1,350 vehicles a day, roughly 7% of them trucks, projected to reach 2,342 by 2044. The structure is 225 ft (68.6 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesSR-143
CrossesI-75 SR-93
LocationSR-143 over I-75
RouteState Highway 143
CountyHamilton County
StateFlorida
Coordinates30.5945, -83.11972
Functional classRural Minor Arterial

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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.4 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length225 ft (68.6 m)
Longest span77 ft (23.5 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,350 (2022)
Projected traffic2,342 by 2044
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

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 SR-143 over I-75 SR-93 built?

It was built in 1961, making it 64 years old in 2025.

What condition is SR-143 over I-75 SR-93 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 February 2024.

How much traffic does SR-143 over I-75 SR-93 carry?

About 1,350 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is SR-143 over I-75 SR-93?

The structure is 225 ft (68.6 m) long with a longest span of 77 ft (23.5 m) and a deck 33 ft wide.

Who owns SR-143 over I-75 SR-93?

It is owned by the State Highway Agency.