US Bridges

C-4-839 over E Prong Crk

FairPosted for load

Anderson County, South Carolina · 14.2 MI SW of Anderson · Structure no. 000000000003815

Built
1962
63 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
38 ft
1 main span
Daily traffic
125
2023 count
Owner
County
County Highway Agency

About this bridge

C-4-839 over E Prong Crk is a steel stringer/multi-beam or girder carrying C-4-839 over E Prong Crk in Anderson County, South Carolina. It was built in 1962, so it is 63 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 6 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 125 vehicles a day, roughly 5% of them trucks, projected to reach 160 by 2043. The structure is 38 ft (11.6 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesC-4-839
CrossesE Prong Crk
Location14.2 MI SW of Anderson
RouteCounty Highway 839
CountyAnderson County
StateSouth Carolina
Coordinates34.29556, -82.71194
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating32.8 US tons
Inventory rating19.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 10
Structure length38 ft (11.6 m)
Longest span38 ft (11.6 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2023)
Projected traffic160 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$62,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C-4-839 over E Prong Crk built?

It was built in 1962, making it 63 years old in 2025.

What condition is C-4-839 over E Prong Crk 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 November 2023.

How much traffic does C-4-839 over E Prong Crk carry?

About 125 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is C-4-839 over E Prong Crk?

The structure is 38 ft (11.6 m) long with a longest span of 38 ft (11.6 m) and a deck 24 ft wide.

Who owns C-4-839 over E Prong Crk?

It is owned by the County Highway Agency.