US Bridges

S-40-1727 over Rockyford Lake

Fair

Richland County, South Carolina · 2 MI NE of Forest Acres · Structure no. 000000000008588

Built
1992
33 years old
Condition
Fair
inspected November 2024
Type
Slab
Prestressed Concrete
Length
90 ft
3 main spans
Daily traffic
450
2023 count
Owner
State
State Highway Agency

About this bridge

S-40-1727 over Rockyford Lake is a prestressed concrete slab carrying S-40-1727 over Rockyford Lake in Richland County, South Carolina. It was built in 1992, so it is 33 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 5 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 450 vehicles a day, roughly 5% of them trucks, projected to reach 576 by 2043. The structure is 90 ft (27.4 m) long and 33 ft wide.

Location

Open in Google Maps
CarriesS-40-1727
CrossesRockyford Lake
Location2 MI NE of Forest Acres
RouteState Highway 1727
CountyRichland County
StateSouth Carolina
Coordinates34.03956, -80.95149
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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.8 US tons
Inventory rating34.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length90 ft (27.4 m)
Longest span30 ft (9.1 m)
Deck width33 ft (10.1 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic450 (2023)
Projected traffic576 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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-40-1727 over Rockyford Lake built?

It was built in 1992, making it 33 years old in 2025.

What condition is S-40-1727 over Rockyford Lake 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 November 2024.

How much traffic does S-40-1727 over Rockyford Lake carry?

About 450 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S-40-1727 over Rockyford Lake?

The structure is 90 ft (27.4 m) long with a longest span of 30 ft (9.1 m) and a deck 33 ft wide.

Who owns S-40-1727 over Rockyford Lake?

It is owned by the State Highway Agency.