US Bridges

S-29-20 over Camp Creek

Fair

Lancaster County, South Carolina · 9.5MI SW Lancaster · Structure no. 000000000006718

Built
1975
50 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Prestressed Concrete
Length
150 ft
5 main spans
Daily traffic
350
2023 count
Owner
State
State Highway Agency

About this bridge

S-29-20 over Camp Creek is a prestressed concrete tee beam carrying S-29-20 over Camp Creek in Lancaster County, South Carolina. It was built in 1975, so it is 50 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 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 350 vehicles a day, roughly 4% of them trucks, projected to reach 511 by 2024. The structure is 150 ft (45.7 m) long and 36 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesS-29-20
CrossesCamp Creek
Location9.5MI SW Lancaster
RouteState Highway 20
Coordinates34.59972, -80.84722
Functional classRural Major 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.1 US tons
Inventory rating26.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans5
Design loadH 15
Structure length150 ft (45.7 m)
Longest span30 ft (9.1 m)
Deck width36 ft (11 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2023)
Projected traffic511 by 2024
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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-29-20 over Camp Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is S-29-20 over Camp 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 September 2024.

How much traffic does S-29-20 over Camp Creek carry?

About 350 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is S-29-20 over Camp Creek?

The structure is 150 ft (45.7 m) long with a longest span of 30 ft (9.1 m) and a deck 36 ft wide.

Who owns S-29-20 over Camp Creek?

It is owned by the State Highway Agency.