US Bridges

S-23-580 over Rocky Creek

FairPosted for load

Greenville County, South Carolina · 5.2 MI N Mauldin · Structure no. 000000000005949

Built
1971
54 years old
Condition
Fair
inspected June 2023
Type
Channel Beam
Prestressed Concrete
Length
45 ft
1 main span
Daily traffic
3,200
2023 count
Owner
State
State Highway Agency

About this bridge

S-23-580 over Rocky Creek is a prestressed concrete channel beam carrying S-23-580 over Rocky Creek in Greenville County, South Carolina. It was built in 1971, so it is 54 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 3,200 vehicles a day, roughly 3% of them trucks, projected to reach 4,896 by 2043. The structure is 45 ft (13.7 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-23-580
CrossesRocky Creek
Location5.2 MI N Mauldin
RouteState Highway 580
CountyGreenville County
StateSouth Carolina
Coordinates34.85224, -82.28019
Functional classUrban 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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating22.8 US tons
Inventory rating9.3 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1 (+1 approach)
Design loadH 10
Structure length45 ft (13.7 m)
Longest span30 ft (9.1 m)
Deck width28 ft (8.4 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,200 (2023)
Projected traffic4,896 by 2043
Trucks3%
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$312,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-23-580 over Rocky Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is S-23-580 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-23-580 over Rocky Creek carry?

About 3,200 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is S-23-580 over Rocky Creek?

The structure is 45 ft (13.7 m) long with a longest span of 30 ft (9.1 m) and a deck 28 ft wide.

Who owns S-23-580 over Rocky Creek?

It is owned by the State Highway Agency.