US Bridges

Sc 513 over Squirrel Swamp

Good

Georgetown County, South Carolina · 5MI SW of Outland · Structure no. 000000000001474

Built
1948
77 years old
Condition
Good
inspected May 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
1,050
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 513 over Squirrel Swamp is a concrete culvert carrying Sc 513 over Squirrel Swamp in Georgetown County, South Carolina. It was built in 1948, so it is 77 years old, older than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,050 vehicles a day, roughly 18% of them trucks, projected to reach 1,533 by 2043. The structure is 22 ft (6.7 m) long and 38 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSc 513
CrossesSquirrel Swamp
Location5MI SW of Outland
RouteState Highway 513
CountyGeorgetown County
StateSouth Carolina
Coordinates33.65962, -79.41444
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
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 rating59 US tons
Inventory rating35.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 20
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width38 ft (11.6 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,050 (2023)
Projected traffic1,533 by 2043
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$104,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Sc 513 over Squirrel Swamp built?

It was built in 1948, making it 77 years old in 2025.

What condition is Sc 513 over Squirrel Swamp in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.

How much traffic does Sc 513 over Squirrel Swamp carry?

About 1,050 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is Sc 513 over Squirrel Swamp?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m) and a deck 38 ft wide.

Who owns Sc 513 over Squirrel Swamp?

It is owned by the State Highway Agency.