US Bridges

I-75 SB SR-93 over SR-121 & 331 Williston R

Good

Alachua County, Florida · I-75 SB at SR-121 · Structure no. 260063

Built
1964
61 years old, rebuilt 1994
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
203 ft
4 main spans
Daily traffic
36,250
2022 count
Owner
State
State Highway Agency

About this bridge

I-75 SB SR-93 over SR-121 & 331 Williston R is a prestressed concrete stringer/multi-beam or girder carrying I-75 SB SR-93 over SR-121 & 331 Williston R in Alachua County, Florida. It was built in 1964 and reconstructed in 1994, so it is 61 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 36,250 vehicles a day, roughly 24% of them trucks, projected to reach 62,894 by 2044. The structure is 203 ft (61.9 m) long and 67 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-121 & 331 Williston R
LocationI-75 SB at SR-121
RouteInterstate 75
CountyAlachua County
StateFlorida
Coordinates29.60199, -82.37342
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.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
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 rating54.3 US tons
Inventory rating37.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length203 ft (61.9 m)
Longest span52 ft (15.8 m)
Deck width67 ft (20.3 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,250 (2022)
Projected traffic62,894 by 2044
Trucks24%
Lanes on structure4
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-75 SB SR-93 over SR-121 & 331 Williston R built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1994.

What condition is I-75 SB SR-93 over SR-121 & 331 Williston R 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 2023.

How much traffic does I-75 SB SR-93 over SR-121 & 331 Williston R carry?

About 36,250 vehicles per day (2022 count), of which roughly 24% are trucks.

How long is I-75 SB SR-93 over SR-121 & 331 Williston R?

The structure is 203 ft (61.9 m) long with a longest span of 52 ft (15.8 m) and a deck 67 ft wide.

Who owns I-75 SB SR-93 over SR-121 & 331 Williston R?

It is owned by the State Highway Agency.