US Bridges

I-95 NB over Combahee River

Fair

Colleton County, South Carolina · Hamp/Col CO LN · Structure no. 000000000005690

Built
1970
55 years old
Condition
Fair
inspected February 2024
Type
Tee Beam
Concrete
Length
810 ft
27 main spans
Daily traffic
26,000
2023 count
Owner
State
State Highway Agency

About this bridge

I-95 NB over Combahee River is a concrete tee beam carrying I-95 NB over Combahee River in Colleton 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 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 26,000 vehicles a day, roughly 22% of them trucks, projected to reach 45,500 by 2043. The structure is 810 ft (246.9 m) long and 43 ft wide.

CarriesI-95 NB
CrossesCombahee River
LocationHamp/Col CO LN
RouteInterstate 95
Coordinates32.7306, -80.84831
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 inspectionFebruary 2024
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 geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.7 US tons
Inventory rating38.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans27
Design loadHS 20
Structure length810 ft (246.9 m)
Longest span30 ft (9.1 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,000 (2023)
Projected traffic45,500 by 2043
Trucks22%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Combahee River built?

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

What condition is I-95 NB over Combahee River 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 February 2024.

How much traffic does I-95 NB over Combahee River carry?

About 26,000 vehicles per day (2023 count), of which roughly 22% are trucks.

How long is I-95 NB over Combahee River?

The structure is 810 ft (246.9 m) long with a longest span of 30 ft (9.1 m) and a deck 43 ft wide.

Who owns I-95 NB over Combahee River?

It is owned by the State Highway Agency.