US Bridges

C-42-171 over Unnamed Creek

Good

Spartanburg County, South Carolina · 5 MI S of Greer · Structure no. 000000000009937

Built
2002
23 years old
Condition
Good
inspected November 2023
Type
Slab
Concrete
Length
50 ft
2 main spans
Daily traffic
225
2023 count
Owner
County
County Highway Agency

About this bridge

C-42-171 over Unnamed Creek is a concrete slab carrying C-42-171 over Unnamed Creek in Spartanburg County, South Carolina. It was built in 2002, so it is 23 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 225 vehicles a day, roughly 5% of them trucks, projected to reach 288 by 2043. The structure is 50 ft (15.2 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesC-42-171
CrossesUnnamed Creek
Location5 MI S of Greer
RouteCounty Highway 171
Coordinates34.86636, -82.18572
Functional classRural 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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.9 US tons
Inventory rating30 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span25 ft (7.6 m)
Deck width28 ft (8.4 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic225 (2023)
Projected traffic288 by 2043
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 C-42-171 over Unnamed Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is C-42-171 over Unnamed 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 November 2023.

How much traffic does C-42-171 over Unnamed Creek carry?

About 225 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is C-42-171 over Unnamed Creek?

The structure is 50 ft (15.2 m) long with a longest span of 25 ft (7.6 m) and a deck 28 ft wide.

Who owns C-42-171 over Unnamed Creek?

It is owned by the County Highway Agency.