US Bridges

Sc 641 over Miller Creeks

Good

Allendale County, South Carolina · 1/2MI E of Sycamores · Structure no. 000000000001004

Built
1940
85 years old
Condition
Good
inspected May 2024
Type
Culvert
Concrete
Length
43 ft
4 main spans
Daily traffic
850
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 641 over Miller Creeks is a concrete culvert carrying Sc 641 over Miller Creeks in Allendale County, South Carolina. It was built in 1940, so it is 85 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 850 vehicles a day, roughly 31% of them trucks, projected to reach 1,241 by 2043. The structure is 43 ft (13 m) long and 43 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesSc 641
CrossesMiller Creeks
Location1/2MI E of Sycamores
RouteState Highway 641
Coordinates33.03153, -81.20309
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.3 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadH 15
Structure length43 ft (13 m)
Longest span10 ft (3 m)
Deck width43 ft (13 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic850 (2023)
Projected traffic1,241 by 2043
Trucks31%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sc 641 over Miller Creeks built?

It was built in 1940, making it 85 years old in 2025.

What condition is Sc 641 over Miller Creeks 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 641 over Miller Creeks carry?

About 850 vehicles per day (2023 count), of which roughly 31% are trucks.

How long is Sc 641 over Miller Creeks?

The structure is 43 ft (13 m) long with a longest span of 10 ft (3 m) and a deck 43 ft wide.

Who owns Sc 641 over Miller Creeks?

It is owned by the State Highway Agency.