US Bridges

L-10-3976 over Red Top Canal

Fair

Charleston County, South Carolina · 3 MI NE of Hollywood · Structure no. 000000000009407

Built
1999
26 years old
Condition
Fair
inspected July 2023
Type
Slab
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
225
2023 count
Owner
County
County Highway Agency

About this bridge

L-10-3976 over Red Top Canal is a prestressed concrete slab carrying L-10-3976 over Red Top Canal in Charleston County, South Carolina. It was built in 1999, so it is 26 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 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 225 vehicles a day, roughly 4% of them trucks, projected to reach 288 by 2043. The structure is 25 ft (7.6 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesL-10-3976
CrossesRed Top Canal
Location3 MI NE of Hollywood
RouteCounty Highway 3976
Coordinates32.79801, -80.12838
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.2 US tons
Inventory rating37.8 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width28 ft (8.4 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic225 (2023)
Projected traffic288 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was L-10-3976 over Red Top Canal built?

It was built in 1999, making it 26 years old in 2025.

What condition is L-10-3976 over Red Top Canal 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 July 2023.

How much traffic does L-10-3976 over Red Top Canal carry?

About 225 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is L-10-3976 over Red Top Canal?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 28 ft wide.

Who owns L-10-3976 over Red Top Canal?

It is owned by the County Highway Agency.