US Bridges

S-18-199 over Br of Dorchester Creek

Fair

Dorchester County, South Carolina · 1.5 MI S Sumrvl · Structure no. 000000000002340

Built
1999
26 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete Continuous
Length
66 ft
3 main spans
Daily traffic
27,400
2023 count
Owner
State
State Highway Agency

About this bridge

S-18-199 over Br of Dorchester Creek is a concrete continuous slab carrying S-18-199 over Br of Dorchester Creek in Dorchester 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 27,400 vehicles a day, roughly 2% of them trucks, projected to reach 33,428 by 2043. The structure is 66 ft (20.1 m) long and 86 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesS-18-199
CrossesBr of Dorchester Creek
Location1.5 MI S Sumrvl
RouteState Highway 199
CountyDorchester County
StateSouth Carolina
Coordinates32.98966, -80.17899
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating65 US tons
Inventory rating50 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length66 ft (20.1 m)
Longest span22 ft (6.7 m)
Deck width86 ft (26.2 m)
Roadway width74 ft (22.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,400 (2023)
Projected traffic33,428 by 2043
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 S-18-199 over Br of Dorchester Creek built?

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

What condition is S-18-199 over Br of Dorchester Creek 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-18-199 over Br of Dorchester Creek carry?

About 27,400 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is S-18-199 over Br of Dorchester Creek?

The structure is 66 ft (20.1 m) long with a longest span of 22 ft (6.7 m) and a deck 86 ft wide.

Who owns S-18-199 over Br of Dorchester Creek?

It is owned by the State Highway Agency.