US Bridges

C-26-779 over Simpson Creek

FairPosted for load

Horry County, South Carolina · 9.2 MI S of Loris · Structure no. 000000000007130

Built
1978
47 years old
Condition
Fair
inspected November 2023
Type
Slab
Concrete
Length
120 ft
8 main spans
Daily traffic
250
2023 count
Owner
County
County Highway Agency

About this bridge

C-26-779 over Simpson Creek is a concrete slab carrying C-26-779 over Simpson Creek in Horry County, South Carolina. It was built in 1978, so it is 47 years old, younger 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 250 vehicles a day, roughly 5% of them trucks, projected to reach 320 by 2043. The structure is 120 ft (36.6 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesC-26-779
CrossesSimpson Creek
Location9.2 MI S of Loris
RouteCounty Highway 779
CountyHorry County
StateSouth Carolina
Coordinates33.93369, -78.81683
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.7 US tons
Inventory rating19 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans8
Design loadH 10
Structure length120 ft (36.6 m)
Longest span15 ft (4.6 m)
Deck width28 ft (8.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2023)
Projected traffic320 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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-26-779 over Simpson Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is C-26-779 over Simpson 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 November 2023.

How much traffic does C-26-779 over Simpson Creek carry?

About 250 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is C-26-779 over Simpson Creek?

The structure is 120 ft (36.6 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.

Who owns C-26-779 over Simpson Creek?

It is owned by the County Highway Agency.