US Bridges

S-29-561 over Stream

Good

Lancaster County, South Carolina · Lancaster City Limits · Structure no. 000000000006319

Built
1973
52 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
40 ft
3 main spans
Daily traffic
3,600
2023 count
Owner
State
State Highway Agency

About this bridge

S-29-561 over Stream is a concrete culvert carrying S-29-561 over Stream in Lancaster County, South Carolina. It was built in 1973, so it is 52 years old, older than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,600 vehicles a day, roughly 4% of them trucks, projected to reach 5,076 by 2043. The structure is 40 ft (12.2 m) long and 90 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesS-29-561
CrossesStream
LocationLancaster City Limits
RouteState Highway 561
Coordinates34.72818, -80.75991
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.5 US tons
Inventory rating40.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span12 ft (3.7 m)
Deck width90 ft (27.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,600 (2023)
Projected traffic5,076 by 2043
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$20,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-29-561 over Stream built?

It was built in 1973, making it 52 years old in 2025.

What condition is S-29-561 over Stream in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does S-29-561 over Stream carry?

About 3,600 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is S-29-561 over Stream?

The structure is 40 ft (12.2 m) long with a longest span of 12 ft (3.7 m) and a deck 90 ft wide.

Who owns S-29-561 over Stream?

It is owned by the State Highway Agency.