US Bridges

S-42-47 over Four Mile Creek

Good

Spartanburg County, South Carolina · 5.0 MI E Spartanburg · Structure no. 000000000008391

Built
1990
35 years old
Condition
Good
inspected September 2023
Type
Slab
Concrete
Length
45 ft
1 main span
Daily traffic
3,300
2023 count
Owner
State
State Highway Agency

About this bridge

S-42-47 over Four Mile Creek is a concrete slab carrying S-42-47 over Four Mile Creek in Spartanburg County, South Carolina. It was built in 1990, so it is 35 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,300 vehicles a day, roughly 9% of them trucks, projected to reach 4,686 by 2043. The structure is 45 ft (13.7 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesS-42-47
CrossesFour Mile Creek
Location5.0 MI E Spartanburg
RouteState Highway 47
Coordinates34.93982, -81.84379
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating47.5 US tons
Inventory rating25.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length45 ft (13.7 m)
Longest span30 ft (9.1 m)
Deck width39 ft (11.8 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,300 (2023)
Projected traffic4,686 by 2043
Trucks9%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S-42-47 over Four Mile Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is S-42-47 over Four Mile 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 September 2023.

How much traffic does S-42-47 over Four Mile Creek carry?

About 3,300 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is S-42-47 over Four Mile Creek?

The structure is 45 ft (13.7 m) long with a longest span of 30 ft (9.1 m) and a deck 39 ft wide.

Who owns S-42-47 over Four Mile Creek?

It is owned by the State Highway Agency.