US Bridges

S-39-27 over Eighteen Mile Creek

Good

Pickens County, South Carolina · 3.0 MI S Liberty · Structure no. 000000000003447

Built
2005
20 years old
Condition
Good
inspected November 2024
Type
Slab
Prestressed Concrete
Length
120 ft
2 main spans
Daily traffic
2,500
2023 count
Owner
State
State Highway Agency

About this bridge

S-39-27 over Eighteen Mile Creek is a prestressed concrete slab carrying S-39-27 over Eighteen Mile Creek in Pickens 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 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 2,500 vehicles a day, roughly 9% of them trucks, projected to reach 3,650 by 2043. The structure is 120 ft (36.6 m) long and 36 ft wide.

CarriesS-39-27
CrossesEighteen Mile Creek
Location3.0 MI S Liberty
RouteState Highway 27
Coordinates34.74179, -82.69157
Functional classRural Major 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 protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating62.8 US tons
Inventory rating48.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 25 or greater
Structure length120 ft (36.6 m)
Longest span70 ft (21.3 m)
Deck width36 ft (11 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,500 (2023)
Projected traffic3,650 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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-39-27 over Eighteen Mile Creek built?

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

What condition is S-39-27 over Eighteen 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 November 2024.

How much traffic does S-39-27 over Eighteen Mile Creek carry?

About 2,500 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is S-39-27 over Eighteen Mile Creek?

The structure is 120 ft (36.6 m) long with a longest span of 70 ft (21.3 m) and a deck 36 ft wide.

Who owns S-39-27 over Eighteen Mile Creek?

It is owned by the State Highway Agency.