US Bridges

S-37-66 over Cleveland Creek

Fair

Oconee County, South Carolina · 11.2 MI S Seneca · Structure no. 000000000007595

Built
1982
43 years old
Condition
Fair
inspected March 2023
Type
Channel Beam
Prestressed Concrete
Length
90 ft
3 main spans
Daily traffic
650
2023 count
Owner
State
State Highway Agency

About this bridge

S-37-66 over Cleveland Creek is a prestressed concrete channel beam carrying S-37-66 over Cleveland Creek in Oconee County, South Carolina. It was built in 1982, so it is 43 years old, younger 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 650 vehicles a day, roughly 15% of them trucks, projected to reach 904 by 2043. The structure is 90 ft (27.4 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesS-37-66
CrossesCleveland Creek
Location11.2 MI S Seneca
RouteState Highway 66
CountyOconee County
StateSouth Carolina
Coordinates34.52568, -82.9766
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.5 US tons
Inventory rating21.1 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadH 15
Structure length90 ft (27.4 m)
Longest span30 ft (9.1 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic650 (2023)
Projected traffic904 by 2043
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S-37-66 over Cleveland Creek built?

It was built in 1982, making it 43 years old in 2025.

What condition is S-37-66 over Cleveland Creek 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 March 2023.

How much traffic does S-37-66 over Cleveland Creek carry?

About 650 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is S-37-66 over Cleveland Creek?

The structure is 90 ft (27.4 m) long with a longest span of 30 ft (9.1 m) and a deck 34 ft wide.

Who owns S-37-66 over Cleveland Creek?

It is owned by the State Highway Agency.