US Bridges

S-42-56 over Big Shoally Crk

Good

Spartanburg County, South Carolina · 7.7MI E Inman · Structure no. 000000000006012

Built
1971
54 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
11,700
2023 count
Owner
State
State Highway Agency

About this bridge

S-42-56 over Big Shoally Crk is a concrete culvert carrying S-42-56 over Big Shoally Crk in Spartanburg County, South Carolina. It was built in 1971, so it is 54 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 11,700 vehicles a day, roughly 2% of them trucks, projected to reach 17,550 by 2043. The structure is 23 ft (7 m) long and 51 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesS-42-56
CrossesBig Shoally Crk
Location7.7MI E Inman
RouteState Highway 56
Coordinates35.04697, -81.96547
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 inspectionSeptember 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.7 US tons
Inventory rating32.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 20
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width51 ft (15.5 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,700 (2023)
Projected traffic17,550 by 2043
Trucks2%
Lanes on structure2
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$140,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-42-56 over Big Shoally Crk built?

It was built in 1971, making it 54 years old in 2025.

What condition is S-42-56 over Big Shoally Crk 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-42-56 over Big Shoally Crk carry?

About 11,700 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is S-42-56 over Big Shoally Crk?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m) and a deck 51 ft wide.

Who owns S-42-56 over Big Shoally Crk?

It is owned by the State Highway Agency.