US Bridges

S-42-79 over U.S. 176

Good

Spartanburg County, South Carolina · 4.0 MI NW Spartanburg · Structure no. 000000000002621

Built
2005
20 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
171 ft
2 main spans
Daily traffic
13,100
2023 count
Owner
State
State Highway Agency

About this bridge

S-42-79 over U.S. 176 is a prestressed concrete continuous stringer/multi-beam or girder carrying S-42-79 over U.S. 176 in Spartanburg County, South Carolina. It was built in 2005, so it is 20 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 13,100 vehicles a day, roughly 2% of them trucks, projected to reach 17,685 by 2043. The structure is 171 ft (52.1 m) long and 78 ft wide.

CarriesS-42-79
CrossesU.S. 176
Location4.0 MI NW Spartanburg
RouteState Highway 79
Coordinates34.9963, -81.97804
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment9: Superior to present desirable criteria
Operating rating73.2 US tons
Inventory rating56.4 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length171 ft (52.1 m)
Longest span86 ft (26.2 m)
Deck width78 ft (23.8 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,100 (2023)
Projected traffic17,685 by 2043
Trucks2%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was S-42-79 over U.S. 176 built?

It was built in 2005, making it 20 years old in 2025.

What condition is S-42-79 over U.S. 176 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 September 2023.

How much traffic does S-42-79 over U.S. 176 carry?

About 13,100 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is S-42-79 over U.S. 176?

The structure is 171 ft (52.1 m) long with a longest span of 86 ft (26.2 m) and a deck 78 ft wide.

Who owns S-42-79 over U.S. 176?

It is owned by the State Highway Agency.