US Bridges

S-11-133 over Irene Reservoir

FairPosted for load

Cherokee County, South Carolina · 2.0MI W Gaffney · Structure no. 000000000002688

Built
1958
67 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
105 ft
7 main spans
Daily traffic
750
2023 count
Owner
State
State Highway Agency

About this bridge

S-11-133 over Irene Reservoir is a concrete slab carrying S-11-133 over Irene Reservoir in Cherokee County, South Carolina. It was built in 1958, so it is 67 years old, older than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 750 vehicles a day, roughly 5% of them trucks, projected to reach 960 by 2043. The structure is 105 ft (32 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesS-11-133
CrossesIrene Reservoir
Location2.0MI W Gaffney
RouteState Highway 133
Coordinates35.06694, -81.68694
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating36 US tons
Inventory rating21.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans7
Design loadH 10
Structure length105 ft (32 m)
Longest span15 ft (4.6 m)
Deck width28 ft (8.4 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic750 (2023)
Projected traffic960 by 2043
Trucks5%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$174,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-11-133 over Irene Reservoir built?

It was built in 1958, making it 67 years old in 2025.

What condition is S-11-133 over Irene Reservoir in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2024.

How much traffic does S-11-133 over Irene Reservoir carry?

About 750 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S-11-133 over Irene Reservoir?

The structure is 105 ft (32 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.

Who owns S-11-133 over Irene Reservoir?

It is owned by the State Highway Agency.