US Bridges

I-10 WB (SR-8) over Suwannee River

Fair

Madison County, Florida · 6.4 Mi. W. of US-90 · Structure no. 350037

Built
1971
54 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
540 ft
3 main spans
Daily traffic
13,000
2023 count
Owner
State
State Highway Agency

About this bridge

I-10 WB (SR-8) over Suwannee River is a steel continuous stringer/multi-beam or girder carrying I-10 WB (SR-8) over Suwannee River in Madison County, Florida. It was built in 1971, so it is 54 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 13,000 vehicles a day, roughly 25% of them trucks, projected to reach 22,555 by 2045. The structure is 540 ft (164.6 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-10 WB (SR-8)
CrossesSuwannee River
Location6.4 Mi. W. of US-90
RouteInterstate 10
CountyMadison County
StateFlorida
Coordinates30.35806, -83.19333
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to 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 rating59.4 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20
Structure length540 ft (164.6 m)
Longest span170 ft (51.8 m)
Deck width42 ft (12.8 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,000 (2023)
Projected traffic22,555 by 2045
Trucks25%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was I-10 WB (SR-8) over Suwannee River built?

It was built in 1971, making it 54 years old in 2025.

What condition is I-10 WB (SR-8) over Suwannee River 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 December 2024.

How much traffic does I-10 WB (SR-8) over Suwannee River carry?

About 13,000 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is I-10 WB (SR-8) over Suwannee River?

The structure is 540 ft (164.6 m) long with a longest span of 170 ft (51.8 m) and a deck 42 ft wide.

Who owns I-10 WB (SR-8) over Suwannee River?

It is owned by the State Highway Agency.