US Bridges

Sc 9 over S.C. 9-U.S. 521 by Pass

Fair

Lancaster County, South Carolina · City Lancaster · Structure no. 000000000004586

Built
1965
60 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
247 ft
3 main spans
Daily traffic
11,100
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 9 over S.C. 9-U.S. 521 by Pass is a prestressed concrete stringer/multi-beam or girder carrying Sc 9 over S.C. 9-U.S. 521 by Pass in Lancaster County, South Carolina. It was built in 1965, so it is 60 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.

It carries about 11,100 vehicles a day, roughly 13% of them trucks, projected to reach 17,316 by 2043. The structure is 247 ft (75.3 m) long and 64 ft wide.

Location

Open in Google Maps
CarriesSc 9
CrossesS.C. 9-U.S. 521 by Pass
LocationCity Lancaster
RouteState Highway 9
CountyLancaster County
StateSouth Carolina
Coordinates34.72404, -80.74687
Functional classUrban Other Principal Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
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
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.3 US tons
Inventory rating38.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3 (+1 approach)
Design loadHS 20
Structure length247 ft (75.3 m)
Longest span69 ft (21 m)
Deck width64 ft (19.4 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,100 (2023)
Projected traffic17,316 by 2043
Trucks13%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sc 9 over S.C. 9-U.S. 521 by Pass built?

It was built in 1965, making it 60 years old in 2025.

What condition is Sc 9 over S.C. 9-U.S. 521 by Pass 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 August 2024.

How much traffic does Sc 9 over S.C. 9-U.S. 521 by Pass carry?

About 11,100 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is Sc 9 over S.C. 9-U.S. 521 by Pass?

The structure is 247 ft (75.3 m) long with a longest span of 69 ft (21 m) and a deck 64 ft wide.

Who owns Sc 9 over S.C. 9-U.S. 521 by Pass?

It is owned by the State Highway Agency.