US Bridges

S-29-204 over Flat Creek

PoorPosted for load

Lancaster County, South Carolina · 12.5MI E Lancaster · Structure no. 000000000000945

Built
1939
86 years old
Condition
Poor
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
51 ft
2 main spans
Daily traffic
100
2023 count
Owner
State
State Highway Agency

About this bridge

S-29-204 over Flat Creek is a steel stringer/multi-beam or girder carrying S-29-204 over Flat Creek in Lancaster County, South Carolina. It was built in 1939, so it is 86 years old, older than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 100 vehicles a day, roughly 4% of them trucks, projected to reach 128 by 2024. The structure is 51 ft (15.5 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesS-29-204
CrossesFlat Creek
Location12.5MI E Lancaster
RouteState Highway 204
Coordinates34.6775, -80.55889
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be 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 rating20.7 US tons
Inventory rating12.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 10
Structure length51 ft (15.5 m)
Longest span26 ft (7.9 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic128 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$270,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-29-204 over Flat Creek built?

It was built in 1939, making it 86 years old in 2025.

What condition is S-29-204 over Flat Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.

How much traffic does S-29-204 over Flat Creek carry?

About 100 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is S-29-204 over Flat Creek?

The structure is 51 ft (15.5 m) long with a longest span of 26 ft (7.9 m) and a deck 28 ft wide.

Who owns S-29-204 over Flat Creek?

It is owned by the State Highway Agency.