US Bridges

I-20 WB over Wateree River

Poor

Kershaw County, South Carolina · 2 MI SW of Camden · Structure no. 000000000005784

Built
1970
55 years old
Condition
Poor
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,500 ft
12 main spans
Daily traffic
22,100
2023 count
Owner
State
State Highway Agency

About this bridge

I-20 WB over Wateree River is a steel continuous stringer/multi-beam or girder carrying I-20 WB over Wateree River in Kershaw County, South Carolina. It was built in 1970, so it is 55 years old, older than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 22,100 vehicles a day, roughly 16% of them trucks, projected to reach 35,360 by 2043. The structure is 1,500 ft (457.2 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-20 WB
CrossesWateree River
Location2 MI SW of Camden
RouteInterstate 20
Coordinates34.21762, -80.62971
Functional classRural Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34 US tons
Inventory rating26.1 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans12 (+10 approach)
Design loadHS 20 + Mod
Structure length1,500 ft (457.2 m)
Longest span140 ft (42.7 m)
Deck width43 ft (13.1 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,100 (2023)
Projected traffic35,360 by 2043
Trucks16%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-20 WB over Wateree River built?

It was built in 1970, making it 55 years old in 2025.

What condition is I-20 WB over Wateree River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does I-20 WB over Wateree River carry?

About 22,100 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is I-20 WB over Wateree River?

The structure is 1,500 ft (457.2 m) long with a longest span of 140 ft (42.7 m) and a deck 43 ft wide.

Who owns I-20 WB over Wateree River?

It is owned by the State Highway Agency.