US Bridges

S-16-32 over I-20

Fair

Darlington County, South Carolina · 3MI NW Lamar · Structure no. 000000000006266

Built
1973
52 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
266 ft
4 main spans
Daily traffic
450
2023 count
Owner
State
State Highway Agency

About this bridge

S-16-32 over I-20 is a steel stringer/multi-beam or girder carrying S-16-32 over I-20 in Darlington County, South Carolina. It was built in 1973, so it is 52 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 450 vehicles a day, roughly 11% of them trucks, projected to reach 626 by 2043. The structure is 266 ft (81.1 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesS-16-32
CrossesI-20
Location3MI NW Lamar
RouteState Highway 32
Coordinates34.19779, -80.0992
Functional classRural Minor 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating38.3 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length266 ft (81.1 m)
Longest span99 ft (30.2 m)
Deck width38 ft (11.5 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic450 (2023)
Projected traffic626 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was S-16-32 over I-20 built?

It was built in 1973, making it 52 years old in 2025.

What condition is S-16-32 over I-20 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 January 2025.

How much traffic does S-16-32 over I-20 carry?

About 450 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is S-16-32 over I-20?

The structure is 266 ft (81.1 m) long with a longest span of 99 ft (30.2 m) and a deck 38 ft wide.

Who owns S-16-32 over I-20?

It is owned by the State Highway Agency.