US Bridges

I10 SR8 over Cypress Slough

Fair

Washington County, Florida · 0.5MI East of CR279 · Structure no. 610042

Built
1973
52 years old, rebuilt 1994
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
300 ft
6 main spans
Daily traffic
9,800
2022 count
Owner
State
State Highway Agency

About this bridge

I10 SR8 over Cypress Slough is a prestressed concrete stringer/multi-beam or girder carrying I10 SR8 over Cypress Slough in Washington County, Florida. It was built in 1973 and reconstructed in 1994, so it is 52 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 9,800 vehicles a day, roughly 37% of them trucks, projected to reach 17,003 by 2044. The structure is 300 ft (91.4 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesI10 SR8
CrossesCypress Slough
Location0.5MI East of CR279
RouteInterstate 10
StateFlorida
Coordinates30.75914, -85.805
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.9 US tons
Inventory rating54 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20 + Mod
Structure length300 ft (91.4 m)
Longest span50 ft (15.2 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,800 (2022)
Projected traffic17,003 by 2044
Trucks37%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 I10 SR8 over Cypress Slough built?

It was built in 1973, making it 52 years old in 2025. It was reconstructed in 1994.

What condition is I10 SR8 over Cypress 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 June 2023.

How much traffic does I10 SR8 over Cypress Slough carry?

About 9,800 vehicles per day (2022 count), of which roughly 37% are trucks.

How long is I10 SR8 over Cypress Slough?

The structure is 300 ft (91.4 m) long with a longest span of 50 ft (15.2 m) and a deck 43 ft wide.

Who owns I10 SR8 over Cypress Slough?

It is owned by the State Highway Agency.