US Bridges

I-75 NB over Gum Slough

Fair

Sumter County, Florida · 2.7 MI South of CR-476 · Structure no. 180032

Built
1965
60 years old, rebuilt 1998
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
125 ft
3 main spans
Daily traffic
29,583
2022 count
Owner
State
State Highway Agency

About this bridge

I-75 NB over Gum Slough is a prestressed concrete stringer/multi-beam or girder carrying I-75 NB over Gum Slough in Sumter County, Florida. It was built in 1965 and reconstructed in 1998, so it is 60 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 29,583 vehicles a day, roughly 23% of them trucks, projected to reach 51,326 by 2044. The structure is 125 ft (38.1 m) long and 58 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI-75 NB
CrossesGum Slough
Location2.7 MI South of CR-476
RouteInterstate 75
CountySumter County
StateFlorida
Coordinates28.6264, -82.17554
Functional classRural 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.6 US tons
Inventory rating43.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length125 ft (38.1 m)
Longest span42 ft (12.8 m)
Deck width58 ft (17.7 m)
Roadway width55 ft (16.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,583 (2022)
Projected traffic51,326 by 2044
Trucks23%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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 NB over Gum Slough built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1998.

What condition is I-75 NB over Gum Slough 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 February 2025.

How much traffic does I-75 NB over Gum Slough carry?

About 29,583 vehicles per day (2022 count), of which roughly 23% are trucks.

How long is I-75 NB over Gum Slough?

The structure is 125 ft (38.1 m) long with a longest span of 42 ft (12.8 m) and a deck 58 ft wide.

Who owns I-75 NB over Gum Slough?

It is owned by the State Highway Agency.