US Bridges

C-4-980 over Trib to Broad Mouth CR

FairPosted for load

Anderson County, South Carolina · 13.6 MI SE of Anderson · Structure no. 000000000001673

Built
1950
75 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
27 ft
1 main span
Daily traffic
125
2023 count
Owner
County
County Highway Agency

About this bridge

C-4-980 over Trib to Broad Mouth CR is a steel stringer/multi-beam or girder carrying C-4-980 over Trib to Broad Mouth CR in Anderson County, South Carolina. It was built in 1950, so it is 75 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 27 ft (8.2 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesC-4-980
CrossesTrib to Broad Mouth CR
Location13.6 MI SE of Anderson
RouteCounty Highway 980
CountyAnderson County
StateSouth Carolina
Coordinates34.48494, -82.40945
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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating26.1 US tons
Inventory rating15.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length27 ft (8.2 m)
Longest span27 ft (8.2 m)
Deck width26 ft (7.8 m)
Roadway width25 ft (7.5 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$50,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C-4-980 over Trib to Broad Mouth CR built?

It was built in 1950, making it 75 years old in 2025.

What condition is C-4-980 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 October 2023.

How much traffic does C-4-980 over Trib to Broad Mouth CR carry?

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

How long is C-4-980 over Trib to Broad Mouth CR?

The structure is 27 ft (8.2 m) long with a longest span of 27 ft (8.2 m) and a deck 26 ft wide.

Who owns C-4-980 over Trib to Broad Mouth CR?

It is owned by the County Highway Agency.