US Bridges

C-4-2126 over Lake Hartwell Backwater

FairPosted for load

Anderson County, South Carolina · 12.6 MI NW of Anderson · Structure no. 000000000001852

Built
1952
73 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
108 ft
3 main spans
Daily traffic
125
2023 count
Owner
County
County Highway Agency

About this bridge

C-4-2126 over Lake Hartwell Backwater is a steel stringer/multi-beam or girder carrying C-4-2126 over Lake Hartwell Backwater in Anderson County, South Carolina. It was built in 1952, so it is 73 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 108 ft (32.8 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesC-4-2126
CrossesLake Hartwell Backwater
Location12.6 MI NW of Anderson
RouteCounty Highway 2126
Coordinates34.48743, -82.87202
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating7.5 US tons
Inventory rating4.6 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 10
Structure length108 ft (32.8 m)
Longest span36 ft (10.9 m)
Deck width30 ft (9.1 m)
Roadway width26 ft (7.9 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$495,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C-4-2126 over Lake Hartwell Backwater built?

It was built in 1952, making it 73 years old in 2025.

What condition is C-4-2126 over Lake Hartwell Backwater 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-4-2126 over Lake Hartwell Backwater carry?

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

How long is C-4-2126 over Lake Hartwell Backwater?

The structure is 108 ft (32.8 m) long with a longest span of 36 ft (10.9 m) and a deck 30 ft wide.

Who owns C-4-2126 over Lake Hartwell Backwater?

It is owned by the County Highway Agency.