US Bridges

Sc 9 over Spencer Mill Creek

Fair

Chesterfield County, South Carolina · 6.4 MI W of Cheraw · Structure no. 000000000006636

Built
1975
50 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
8,600
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 9 over Spencer Mill Creek is a concrete culvert carrying Sc 9 over Spencer Mill Creek in Chesterfield County, South Carolina. It was built in 1975, so it is 50 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 6 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 8,600 vehicles a day, roughly 10% of them trucks, projected to reach 14,964 by 2043. The structure is 23 ft (6.9 m) long and 112 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesSc 9
CrossesSpencer Mill Creek
Location6.4 MI W of Cheraw
RouteState Highway 9
CountyChesterfield County
StateSouth Carolina
Coordinates34.71564, -79.99472
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating38.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length23 ft (6.9 m)
Longest span10 ft (3 m)
Deck width112 ft (34 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,600 (2023)
Projected traffic14,964 by 2043
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sc 9 over Spencer Mill Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is Sc 9 over Spencer Mill Creek 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 2023.

How much traffic does Sc 9 over Spencer Mill Creek carry?

About 8,600 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Sc 9 over Spencer Mill Creek?

The structure is 23 ft (6.9 m) long with a longest span of 10 ft (3 m) and a deck 112 ft wide.

Who owns Sc 9 over Spencer Mill Creek?

It is owned by the State Highway Agency.