US Bridges

Rocky Branch-Bridg over Rocky Branch

FairPosted for load

Fairfield County, South Carolina · No Data Entered · Structure no. 081201000003121

Built
1963
62 years old
Condition
Fair
inspected January 2025
Type
Channel Beam
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Rocky Branch-Bridg over Rocky Branch is a prestressed concrete channel beam carrying Rocky Branch-Bridg over Rocky Branch in Fairfield County, South Carolina. It was built in 1963, so it is 62 years old, older than the South Carolina average of 48 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 75 by 2045. The structure is 30 ft (9.1 m) long and 16 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

Open in Google Maps
CarriesRocky Branch-Bridg
CrossesRocky Branch
LocationNo Data Entered
RouteFederal Lands Road 412.6
CountyFairfield County
StateSouth Carolina
Coordinates34.4313, -81.3453
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating14.3 US tons
Inventory rating8.3 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 15
Structure length30 ft (9.1 m)
Longest span29 ft (8.7 m)
Deck width16 ft (5 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed620.7 mi (999 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Rocky Branch-Bridg over Rocky Branch built?

It was built in 1963, making it 62 years old in 2025.

What condition is Rocky Branch-Bridg over Rocky Branch 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 January 2025.

How much traffic does Rocky Branch-Bridg over Rocky Branch carry?

About 50 vehicles per day (latest count).

How long is Rocky Branch-Bridg over Rocky Branch?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.7 m) and a deck 16 ft wide.

Who owns Rocky Branch-Bridg over Rocky Branch?

It is owned by the U.S. Forest Service.