US Bridges

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

Good

Madison County, Florida · 1.2 Mi.W.Of Suwannee Riv. · Structure no. 350035

Built
1971
54 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
300 ft
6 main spans
Daily traffic
13,000
2023 count
Owner
State
State Highway Agency

About this bridge

I-10 WB (SR-8) over Suwannee River Relief is a prestressed concrete stringer/multi-beam or girder carrying I-10 WB (SR-8) over Suwannee River Relief 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 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 13,000 vehicles a day, roughly 25% of them trucks, projected to reach 22,555 by 2045. The structure is 300 ft (91.4 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-10 WB (SR-8)
CrossesSuwannee River Relief
Location1.2 Mi.W.Of Suwannee Riv.
RouteInterstate 10
StateFlorida
Coordinates30.36155, -83.21424
Functional classRural 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating41.4 US tons
Inventory rating37.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length300 ft (91.4 m)
Longest span50 ft (15.2 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
CrossesRelief for waterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

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

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

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

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

The structure is 300 ft (91.4 m) long with a longest span of 50 ft (15.2 m) and a deck 42 ft wide.

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

It is owned by the State Highway Agency.