US Bridges

S-13-770 over Fork Creek

Fair

Chesterfield County, South Carolina · 1.7 SW Jefferson · Structure no. 000000000006846

Built
1976
49 years old
Condition
Fair
inspected October 2024
Type
Channel Beam
Prestressed Concrete
Length
150 ft
5 main spans
Daily traffic
25
2023 count
Owner
State
State Highway Agency

About this bridge

S-13-770 over Fork Creek is a prestressed concrete channel beam carrying S-13-770 over Fork Creek in Chesterfield County, South Carolina. It was built in 1976, so it is 49 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.

It carries about 25 vehicles a day, projected to reach 32 by 2043. The structure is 150 ft (45.7 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesS-13-770
CrossesFork Creek
Location1.7 SW Jefferson
RouteState Highway 770
Coordinates34.63156, -80.40448
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating41.1 US tons
Inventory rating18.5 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans5
Design loadH 15
Structure length150 ft (45.7 m)
Longest span30 ft (9.1 m)
Deck width30 ft (9 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2023)
Projected traffic32 by 2043
Trucks0%
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

OwnerState Highway Agency
Maintained byState 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 S-13-770 over Fork Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is S-13-770 over Fork Creek 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 2024.

How much traffic does S-13-770 over Fork Creek carry?

About 25 vehicles per day (2023 count).

How long is S-13-770 over Fork Creek?

The structure is 150 ft (45.7 m) long with a longest span of 30 ft (9.1 m) and a deck 30 ft wide.

Who owns S-13-770 over Fork Creek?

It is owned by the State Highway Agency.