US Bridges

S-33-86 over Rocky Creek

FairPosted for load

McCormick County, South Carolina · 2.4 MI SE Mccormick · Structure no. 000000000004173

Built
1963
62 years old
Condition
Fair
inspected June 2023
Type
Channel Beam
Prestressed Concrete
Length
120 ft
4 main spans
Daily traffic
200
2023 count
Owner
State
State Highway Agency

About this bridge

S-33-86 over Rocky Creek is a prestressed concrete channel beam carrying S-33-86 over Rocky Creek in McCormick County, South Carolina. It was built in 1963, so it is 62 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 200 vehicles a day, roughly 5% of them trucks, projected to reach 256 by 2043. The structure is 120 ft (36.6 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesS-33-86
CrossesRocky Creek
Location2.4 MI SE Mccormick
RouteState Highway 86
CountyMcCormick County
StateSouth Carolina
Coordinates33.89942, -82.25361
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionJune 2023
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating31.7 US tons
Inventory rating10 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans4
Design loadOther
Structure length120 ft (36.6 m)
Longest span30 ft (9.1 m)
Deck width28 ft (8.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2023)
Projected traffic256 by 2043
Trucks5%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$600,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-33-86 over Rocky Creek built?

It was built in 1963, making it 62 years old in 2025.

What condition is S-33-86 over Rocky 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 June 2023.

How much traffic does S-33-86 over Rocky Creek carry?

About 200 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S-33-86 over Rocky Creek?

The structure is 120 ft (36.6 m) long with a longest span of 30 ft (9.1 m) and a deck 28 ft wide.

Who owns S-33-86 over Rocky Creek?

It is owned by the State Highway Agency.