US Bridges

C-4-3072 over Hartwell Reservoir

Fair

Anderson County, South Carolina · 10.8 MI NW of Anderson · Structure no. 000000000005211

Built
1968
57 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
41 ft
1 main span
Daily traffic
750
2023 count
Owner
County
County Highway Agency

About this bridge

C-4-3072 over Hartwell Reservoir is a steel stringer/multi-beam or girder carrying C-4-3072 over Hartwell Reservoir in Anderson County, South Carolina. It was built in 1968, so it is 57 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.

It carries about 750 vehicles a day, roughly 5% of them trucks, projected to reach 923 by 2024. The structure is 41 ft (12.5 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesC-4-3072
CrossesHartwell Reservoir
Location10.8 MI NW of Anderson
RouteCounty Highway 3072
CountyAnderson County
StateSouth Carolina
Coordinates34.51639, -82.83722
Functional classRural Major Collector

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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating64.6 US tons
Inventory rating38.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length41 ft (12.5 m)
Longest span41 ft (12.5 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic750 (2023)
Projected traffic923 by 2024
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was C-4-3072 over Hartwell Reservoir built?

It was built in 1968, making it 57 years old in 2025.

What condition is C-4-3072 over Hartwell Reservoir 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-4-3072 over Hartwell Reservoir carry?

About 750 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is C-4-3072 over Hartwell Reservoir?

The structure is 41 ft (12.5 m) long with a longest span of 41 ft (12.5 m) and a deck 29 ft wide.

Who owns C-4-3072 over Hartwell Reservoir?

It is owned by the County Highway Agency.