US Bridges

S-18-244 over Trib to Cypress Swamp

Fair

Dorchester County, South Carolina · 10 MI W Sumrvl · Structure no. 000000000004310

Built
1964
61 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete
Length
45 ft
3 main spans
Daily traffic
275
2023 count
Owner
State
State Highway Agency

About this bridge

S-18-244 over Trib to Cypress Swamp is a concrete slab carrying S-18-244 over Trib to Cypress Swamp in Dorchester County, South Carolina. It was built in 1964, so it is 61 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 275 vehicles a day, roughly 5% of them trucks, projected to reach 352 by 2043. The structure is 45 ft (13.7 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesS-18-244
CrossesTrib to Cypress Swamp
Location10 MI W Sumrvl
RouteState Highway 244
Coordinates33.01039, -80.34786
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46.1 US tons
Inventory rating27.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadH 15
Structure length45 ft (13.7 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 traffic275 (2023)
Projected traffic352 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 S-18-244 over Trib to Cypress Swamp built?

It was built in 1964, making it 61 years old in 2025.

What condition is S-18-244 over Trib to Cypress 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 May 2023.

How much traffic does S-18-244 over Trib to Cypress Swamp carry?

About 275 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S-18-244 over Trib to Cypress Swamp?

The structure is 45 ft (13.7 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.

Who owns S-18-244 over Trib to Cypress Swamp?

It is owned by the State Highway Agency.