US Bridges

S-29-743 over Unnamed Stream

Good

Lancaster County, South Carolina · 3.5MI SE Lancaster · Structure no. 000000000007489

Built
1981
44 years old
Condition
Good
inspected July 2023
Type
Slab
Concrete
Length
60 ft
4 main spans
Daily traffic
650
2023 count
Owner
State
State Highway Agency

About this bridge

S-29-743 over Unnamed Stream is a concrete slab carrying S-29-743 over Unnamed Stream in Lancaster County, South Carolina. It was built in 1981, so it is 44 years old, younger 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 650 vehicles a day, roughly 5% of them trucks, projected to reach 832 by 2043. The structure is 60 ft (18.3 m) long and 38 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesS-29-743
CrossesUnnamed Stream
Location3.5MI SE Lancaster
RouteState Highway 743
CountyLancaster County
StateSouth Carolina
Coordinates34.67769, -80.74381
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.4 US tons
Inventory rating24.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length60 ft (18.3 m)
Longest span15 ft (4.6 m)
Deck width38 ft (11.7 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic650 (2023)
Projected traffic832 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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-29-743 over Unnamed Stream built?

It was built in 1981, making it 44 years old in 2025.

What condition is S-29-743 over Unnamed 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-29-743 over Unnamed Stream carry?

About 650 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S-29-743 over Unnamed Stream?

The structure is 60 ft (18.3 m) long with a longest span of 15 ft (4.6 m) and a deck 38 ft wide.

Who owns S-29-743 over Unnamed Stream?

It is owned by the State Highway Agency.