US Bridges

River Road over Unnamed Slough

FairPosted for load

Walton County, Florida · 1.7MI East of SR 80 · Structure no. 604131

Built
1997
28 years old
Condition
Fair
inspected March 2024
Type
Girder and Floorbeam System
Steel
Length
66 ft
1 main span
Daily traffic
50
2022 count
Owner
County
County Highway Agency

About this bridge

River Road over Unnamed Slough is a steel girder and floorbeam system carrying River Road over Unnamed Slough in Walton County, Florida. It was built in 1997, so it is 28 years old, younger 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, projected to reach 87 by 2042. The structure is 66 ft (20 m) long and 11 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesRiver Road
CrossesUnnamed Slough
Location1.7MI East of SR 80
CountyWalton County
StateFlorida
Coordinates30.62365, -85.91555
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating32.4 US tons
Inventory rating19.4 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckSteel plate
Main spans1
Design loadUnknown
Structure length66 ft (20 m)
Longest span66 ft (20 m)
Deck width11 ft (3.5 m)
Roadway width10 ft (3.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic87 by 2042
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 River Road over Unnamed Slough built?

It was built in 1997, making it 28 years old in 2025.

What condition is River Road over Unnamed 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 March 2024.

How much traffic does River Road over Unnamed Slough carry?

About 50 vehicles per day (2022 count).

How long is River Road over Unnamed Slough?

The structure is 66 ft (20 m) long with a longest span of 66 ft (20 m) and a deck 11 ft wide.

Who owns River Road over Unnamed Slough?

It is owned by the County Highway Agency.