US Bridges

S-33-79 over Sawney Creek

Good

McCormick County, South Carolina · 3.7 MI NW Mt Carmel · Structure no. 000000000003688

Built
2009
16 years old
Condition
Good
inspected June 2023
Type
Slab
Prestressed Concrete
Length
120 ft
3 main spans
Daily traffic
75
2023 count
Owner
State
State Highway Agency

About this bridge

S-33-79 over Sawney Creek is a prestressed concrete slab carrying S-33-79 over Sawney Creek in McCormick County, South Carolina. It was built in 2009, so it is 16 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 75 vehicles a day, projected to reach 104 by 2043. The structure is 120 ft (36.6 m) long and 36 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesS-33-79
CrossesSawney Creek
Location3.7 MI NW Mt Carmel
RouteState Highway 79
Coordinates34.05846, -82.52581
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.2 US tons
Inventory rating37.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length120 ft (36.6 m)
Longest span60 ft (18.3 m)
Deck width36 ft (11 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2023)
Projected traffic104 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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-33-79 over Sawney Creek built?

It was built in 2009, making it 16 years old in 2025.

What condition is S-33-79 over Sawney Creek 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 June 2023.

How much traffic does S-33-79 over Sawney Creek carry?

About 75 vehicles per day (2023 count).

How long is S-33-79 over Sawney Creek?

The structure is 120 ft (36.6 m) long with a longest span of 60 ft (18.3 m) and a deck 36 ft wide.

Who owns S-33-79 over Sawney Creek?

It is owned by the State Highway Agency.