US Bridges

S-11-307 over Irene Creek

Good

Cherokee County, South Carolina · 3.1MI SW Gaffney · Structure no. 000000000004280

Built
2006
19 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
255 ft
3 main spans
Daily traffic
2,700
2023 count
Owner
State
State Highway Agency

About this bridge

S-11-307 over Irene Creek is a prestressed concrete stringer/multi-beam or girder carrying S-11-307 over Irene Creek in Cherokee County, South Carolina. It was built in 2006, so it is 19 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 2,700 vehicles a day, roughly 8% of them trucks, projected to reach 3,807 by 2024. The structure is 255 ft (77.7 m) long and 37 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesS-11-307
CrossesIrene Creek
Location3.1MI SW Gaffney
RouteState Highway 307
Coordinates35.05444, -81.70389
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 evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating30.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length255 ft (77.7 m)
Longest span85 ft (25.9 m)
Deck width37 ft (11.2 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,700 (2023)
Projected traffic3,807 by 2024
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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-11-307 over Irene Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is S-11-307 over Irene 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-11-307 over Irene Creek carry?

About 2,700 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is S-11-307 over Irene Creek?

The structure is 255 ft (77.7 m) long with a longest span of 85 ft (25.9 m) and a deck 37 ft wide.

Who owns S-11-307 over Irene Creek?

It is owned by the State Highway Agency.