US Bridges

Ramp Off I-526 WB over Filbin Creek

Fair

Charleston County, South Carolina · In N. Charleston · Structure no. 000000000008528

Built
1992
33 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete Continuous
Length
660 ft
22 main spans
Daily traffic
8,900
2023 count
Owner
State
State Highway Agency

About this bridge

Ramp Off I-526 WB over Filbin Creek is a concrete continuous slab carrying Ramp Off I-526 WB over Filbin Creek in Charleston County, South Carolina. It was built in 1992, so it is 33 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 8,900 vehicles a day, roughly 9% of them trucks, projected to reach 20,381 by 2043. The structure is 660 ft (201.2 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRamp Off I-526 WB
CrossesFilbin Creek
LocationIn N. Charleston
RouteInterstate 526
Coordinates32.895, -79.9887
Functional classUrban 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 protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating57.5 US tons
Inventory rating34.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans22
Design loadHS 20 + Mod
Structure length660 ft (201.2 m)
Longest span30 ft (9.1 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,900 (2023)
Projected traffic20,381 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 Off I-526 WB over Filbin Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is Ramp Off I-526 WB over Filbin Creek 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 July 2024.

How much traffic does Ramp Off I-526 WB over Filbin Creek carry?

About 8,900 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Ramp Off I-526 WB over Filbin Creek?

The structure is 660 ft (201.2 m) long with a longest span of 30 ft (9.1 m) and a deck 32 ft wide.

Who owns Ramp Off I-526 WB over Filbin Creek?

It is owned by the State Highway Agency.