US Bridges

I-95 NB over Lake Marion Relief

Fair

Clarendon County, South Carolina · 7MI S of Summerton · Structure no. 000000000005250

Built
1968
57 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Concrete
Length
360 ft
9 main spans
Daily traffic
19,800
2023 count
Owner
State
State Highway Agency

About this bridge

I-95 NB over Lake Marion Relief is a concrete tee beam carrying I-95 NB over Lake Marion Relief in Clarendon County, South Carolina. It was built in 1968, so it is 57 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 19,800 vehicles a day, roughly 22% of them trucks, projected to reach 34,650 by 2043. The structure is 360 ft (109.7 m) long and 35 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesI-95 NB
CrossesLake Marion Relief
Location7MI S of Summerton
RouteInterstate 95
CountyClarendon County
StateSouth Carolina
Coordinates33.51813, -80.43556
Functional classRural Principal Arterial - Interstate

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to 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 rating66.5 US tons
Inventory rating51 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length360 ft (109.7 m)
Longest span40 ft (12.2 m)
Deck width35 ft (10.7 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,800 (2023)
Projected traffic34,650 by 2043
Trucks22%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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-95 NB over Lake Marion Relief built?

It was built in 1968, making it 57 years old in 2025.

What condition is I-95 NB over Lake Marion Relief 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 October 2023.

How much traffic does I-95 NB over Lake Marion Relief carry?

About 19,800 vehicles per day (2023 count), of which roughly 22% are trucks.

How long is I-95 NB over Lake Marion Relief?

The structure is 360 ft (109.7 m) long with a longest span of 40 ft (12.2 m) and a deck 35 ft wide.

Who owns I-95 NB over Lake Marion Relief?

It is owned by the State Highway Agency.