US Bridges

C-4-2138 over Middle Branch CR

FairPosted for load

Anderson County, South Carolina · 19.7 MI NE of Anderson · Structure no. 000000000001786

Built
1951
74 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
68 ft
3 main spans
Daily traffic
175
2023 count
Owner
County
County Highway Agency

About this bridge

C-4-2138 over Middle Branch CR is a steel stringer/multi-beam or girder carrying C-4-2138 over Middle Branch CR in Anderson County, South Carolina. It was built in 1951, so it is 74 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 175 vehicles a day, roughly 5% of them trucks, projected to reach 224 by 2043. The structure is 68 ft (20.7 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesC-4-2138
CrossesMiddle Branch CR
Location19.7 MI NE of Anderson
RouteCounty Highway 2138
CountyAnderson County
StateSouth Carolina
Coordinates34.77925, -82.53045
Functional classUrban 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 protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating42.5 US tons
Inventory rating25.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 10
Structure length68 ft (20.7 m)
Longest span23 ft (7 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175 (2023)
Projected traffic224 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 C-4-2138 over Middle Branch CR built?

It was built in 1951, making it 74 years old in 2025.

What condition is C-4-2138 over Middle Branch 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 November 2024.

How much traffic does C-4-2138 over Middle Branch CR carry?

About 175 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is C-4-2138 over Middle Branch CR?

The structure is 68 ft (20.7 m) long with a longest span of 23 ft (7 m) and a deck 26 ft wide.

Who owns C-4-2138 over Middle Branch CR?

It is owned by the County Highway Agency.