US Bridges

US 21/RIBAUT RD over Battery Creek Overflow

Fair

Beaufort County, South Carolina · Nr Parris Island · Structure no. 000000000008712

Built
1993
32 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
120 ft
4 main spans
Daily traffic
32,900
2023 count
Owner
State
State Highway Agency

About this bridge

US 21/RIBAUT RD over Battery Creek Overflow is a concrete continuous slab carrying US 21/RIBAUT RD over Battery Creek Overflow in Beaufort County, South Carolina. It was built in 1993, so it is 32 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 32,900 vehicles a day, roughly 3% of them trucks, projected to reach 36,848 by 2043. The structure is 120 ft (36.6 m) long and 75 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesUS 21/RIBAUT RD
CrossesBattery Creek Overflow
LocationNr Parris Island
RouteU.S. Route 21
CountyBeaufort County
StateSouth Carolina
Coordinates32.38249, -80.70526
Functional classUrban Minor Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.1 US tons
Inventory rating55.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length120 ft (36.6 m)
Longest span30 ft (9.1 m)
Deck width75 ft (22.8 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,900 (2023)
Projected traffic36,848 by 2043
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 US 21/RIBAUT RD over Battery Creek Overflow built?

It was built in 1993, making it 32 years old in 2025.

What condition is US 21/RIBAUT RD over Battery Creek Overflow 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 US 21/RIBAUT RD over Battery Creek Overflow carry?

About 32,900 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is US 21/RIBAUT RD over Battery Creek Overflow?

The structure is 120 ft (36.6 m) long with a longest span of 30 ft (9.1 m) and a deck 75 ft wide.

Who owns US 21/RIBAUT RD over Battery Creek Overflow?

It is owned by the State Highway Agency.