US Bridges

C-4-983 over Trib to Broad Mouth CR

FairPosted for load

Anderson County, South Carolina · 14.7 MI SE Anderson · Structure no. 000000000002658

Built
1958
67 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
26 ft
1 main span
Daily traffic
125
2023 count
Owner
County
County Highway Agency

About this bridge

C-4-983 over Trib to Broad Mouth CR is a steel stringer/multi-beam or girder carrying C-4-983 over Trib to Broad Mouth CR in Anderson County, South Carolina. It was built in 1958, so it is 67 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 125 vehicles a day, roughly 5% of them trucks, projected to reach 160 by 2043. The structure is 26 ft (7.9 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesC-4-983
CrossesTrib to Broad Mouth CR
Location14.7 MI SE Anderson
RouteCounty Highway 983
Coordinates34.48636, -82.38896
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.
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 protection7 GoodSome minor problems.
Last inspectionSeptember 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating35.1 US tons
Inventory rating21.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 10
Structure length26 ft (7.9 m)
Longest span26 ft (7.9 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.2 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 statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$47,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C-4-983 over Trib to Broad Mouth CR built?

It was built in 1958, making it 67 years old in 2025.

What condition is C-4-983 over Trib to Broad Mouth CR 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 September 2024.

How much traffic does C-4-983 over Trib to Broad Mouth CR carry?

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

How long is C-4-983 over Trib to Broad Mouth CR?

The structure is 26 ft (7.9 m) long with a longest span of 26 ft (7.9 m) and a deck 25 ft wide.

Who owns C-4-983 over Trib to Broad Mouth CR?

It is owned by the County Highway Agency.