US Bridges

S-21-13 over Beaverdam Creek

Good

Florence County, South Carolina · 1 MI W Florence · Structure no. 000000000000412

Built
1930
95 years old
Condition
Good
inspected April 2024
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
18,300
2023 count
Owner
State
State Highway Agency

About this bridge

S-21-13 over Beaverdam Creek is a concrete culvert carrying S-21-13 over Beaverdam Creek in Florence County, South Carolina. It was built in 1930, so it is 95 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 18,300 vehicles a day, roughly 2% of them trucks, projected to reach 12,261 by 2043. The structure is 32 ft (9.8 m) long and 76 ft wide.

CarriesS-21-13
CrossesBeaverdam Creek
Location1 MI W Florence
RouteState Highway 13
Coordinates34.20409, -79.8314
Functional classUrban Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.8 US tons
Inventory rating25 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 20
Structure length32 ft (9.8 m)
Longest span10 ft (3 m)
Deck width76 ft (23.2 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,300 (2023)
Projected traffic12,261 by 2043
Trucks2%
Lanes on structure4
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S-21-13 over Beaverdam Creek built?

It was built in 1930, making it 95 years old in 2025.

What condition is S-21-13 over Beaverdam Creek 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 April 2024.

How much traffic does S-21-13 over Beaverdam Creek carry?

About 18,300 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is S-21-13 over Beaverdam Creek?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m) and a deck 76 ft wide.

Who owns S-21-13 over Beaverdam Creek?

It is owned by the State Highway Agency.