US Bridges

Ramp on I-526 EB over Marsh

Fair

Berkeley County, South Carolina · 5.5 MI NE Charleston · Structure no. 000000000008228

Built
1989
36 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete Continuous
Length
390 ft
13 main spans
Daily traffic
9,100
2023 count
Owner
State
State Highway Agency

About this bridge

Ramp on I-526 EB over Marsh is a concrete continuous slab carrying Ramp on I-526 EB over Marsh in Berkeley County, South Carolina. It was built in 1989, so it is 36 years old, younger 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 9,100 vehicles a day, roughly 9% of them trucks, projected to reach 20,839 by 2043. The structure is 390 ft (118.9 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesRamp on I-526 EB
CrossesMarsh
Location5.5 MI NE Charleston
RouteInterstate 526
CountyBerkeley County
StateSouth Carolina
Coordinates32.87661, -79.92916
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.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating50.4 US tons
Inventory rating38.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans13
Design loadHS 20
Structure length390 ft (118.9 m)
Longest span30 ft (9.1 m)
Deck width29 ft (8.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,100 (2023)
Projected traffic20,839 by 2043
Trucks9%
Lanes on structure1
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 Ramp on I-526 EB over Marsh built?

It was built in 1989, making it 36 years old in 2025.

What condition is Ramp on I-526 EB over Marsh 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 Ramp on I-526 EB over Marsh carry?

About 9,100 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Ramp on I-526 EB over Marsh?

The structure is 390 ft (118.9 m) long with a longest span of 30 ft (9.1 m) and a deck 29 ft wide.

Who owns Ramp on I-526 EB over Marsh?

It is owned by the State Highway Agency.