US Bridges

S-38-1148 over Caw Caw Swamp

Fair

Orangeburg County, South Carolina · City of Orangeburg · Structure no. 000000000003955

Built
1962
63 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete
Length
60 ft
4 main spans
Daily traffic
4,800
2023 count
Owner
State
State Highway Agency

About this bridge

S-38-1148 over Caw Caw Swamp is a concrete slab carrying S-38-1148 over Caw Caw Swamp in Orangeburg County, South Carolina. It was built in 1962, so it is 63 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 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 4,800 vehicles a day, roughly 2% of them trucks, projected to reach 6,768 by 2043. The structure is 60 ft (18.3 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesS-38-1148
CrossesCaw Caw Swamp
LocationCity of Orangeburg
RouteState Highway 1148
CountyOrangeburg County
StateSouth Carolina
Coordinates33.50495, -80.8893
Functional classUrban 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 protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.6 US tons
Inventory rating39.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans4
Design loadH 10
Structure length60 ft (18.3 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 traffic4,800 (2023)
Projected traffic6,768 by 2043
Trucks2%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$420,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-38-1148 over Caw Caw Swamp built?

It was built in 1962, making it 63 years old in 2025.

What condition is S-38-1148 over Caw Caw Swamp 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 2023.

How much traffic does S-38-1148 over Caw Caw Swamp carry?

About 4,800 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is S-38-1148 over Caw Caw Swamp?

The structure is 60 ft (18.3 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.

Who owns S-38-1148 over Caw Caw Swamp?

It is owned by the State Highway Agency.