US Bridges

S-3-19 over Coosawhatchie River

Fair

Allendale County, South Carolina · 7MI SE Allendale · Structure no. 000000000007314

Built
1980
45 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete
Length
120 ft
8 main spans
Daily traffic
550
2023 count
Owner
State
State Highway Agency

About this bridge

S-3-19 over Coosawhatchie River is a concrete slab carrying S-3-19 over Coosawhatchie River in Allendale County, South Carolina. It was built in 1980, so it is 45 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.

It carries about 550 vehicles a day, roughly 12% of them trucks, projected to reach 765 by 2043. The structure is 120 ft (36.6 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesS-3-19
CrossesCoosawhatchie River
Location7MI SE Allendale
RouteState Highway 19
CountyAllendale County
StateSouth Carolina
Coordinates32.93757, -81.29087
Functional classRural Minor 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating27.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans8
Design loadH 15
Structure length120 ft (36.6 m)
Longest span15 ft (4.6 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (2023)
Projected traffic765 by 2043
Trucks12%
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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$194,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-3-19 over Coosawhatchie River built?

It was built in 1980, making it 45 years old in 2025.

What condition is S-3-19 over Coosawhatchie River 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 May 2024.

How much traffic does S-3-19 over Coosawhatchie River carry?

About 550 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is S-3-19 over Coosawhatchie River?

The structure is 120 ft (36.6 m) long with a longest span of 15 ft (4.6 m) and a deck 33 ft wide.

Who owns S-3-19 over Coosawhatchie River?

It is owned by the State Highway Agency.