US Bridges

Sc 109 over Thompson Creek

Fair

Chesterfield County, South Carolina · 2.1 MI N of Mt Croghan · Structure no. 000000000001024

Built
1940
85 years old
Condition
Fair
inspected November 2023
Type
Tee Beam
Concrete
Length
150 ft
5 main spans
Daily traffic
1,650
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 109 over Thompson Creek is a concrete tee beam carrying Sc 109 over Thompson Creek in Chesterfield 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 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 1,650 vehicles a day, roughly 28% of them trucks, projected to reach 2,409 by 2043. The structure is 150 ft (45.7 m) long and 26 ft wide.

Location

Open in Google Maps
CarriesSc 109
CrossesThompson Creek
Location2.1 MI N of Mt Croghan
RouteState Highway 109
CountyChesterfield County
StateSouth Carolina
Coordinates34.80314, -80.21256
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.8 US tons
Inventory rating34 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 15
Structure length150 ft (45.7 m)
Longest span30 ft (9.1 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,650 (2023)
Projected traffic2,409 by 2043
Trucks28%
Lanes on structure2
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 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 109 over Thompson Creek built?

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

What condition is Sc 109 over Thompson 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 109 over Thompson Creek carry?

About 1,650 vehicles per day (2023 count), of which roughly 28% are trucks.

How long is Sc 109 over Thompson Creek?

The structure is 150 ft (45.7 m) long with a longest span of 30 ft (9.1 m) and a deck 26 ft wide.

Who owns Sc 109 over Thompson Creek?

It is owned by the State Highway Agency.