US Bridges

I-75 over SR-40

Fair

Marion County, Florida · I-75 NB over SR-40 · Structure no. 360920

Built
1964
61 years old, rebuilt 1995
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
193 ft
3 main spans
Daily traffic
45,000
2022 count
Owner
State
State Highway Agency

About this bridge

I-75 over SR-40 is a prestressed concrete stringer/multi-beam or girder carrying I-75 over SR-40 in Marion County, Florida. It was built in 1964 and reconstructed in 1995, 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 45,000 vehicles a day, roughly 24% of them trucks, projected to reach 78,075 by 2044. The structure is 193 ft (58.8 m) long and 59 ft wide.

CarriesI-75
CrossesSR-40
LocationI-75 NB over SR-40
RouteInterstate 75
StateFlorida
Coordinates29.18631, -82.18461
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.9 US tons
Inventory rating35.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length193 ft (58.8 m)
Longest span79 ft (24.1 m)
Deck width59 ft (18.1 m)
Roadway width56 ft (17.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45,000 (2022)
Projected traffic78,075 by 2044
Trucks24%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 over SR-40 built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1995.

What condition is I-75 over SR-40 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does I-75 over SR-40 carry?

About 45,000 vehicles per day (2022 count), of which roughly 24% are trucks.

How long is I-75 over SR-40?

The structure is 193 ft (58.8 m) long with a longest span of 79 ft (24.1 m) and a deck 59 ft wide.

Who owns I-75 over SR-40?

It is owned by the State Highway Agency.