US Bridges

Ramp Off I-526 WB over Filbin Creek

Fair

Charleston County, South Carolina · In N. Charleston · Structure no. 000000000008526

Built
1992
33 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
612 ft
6 main spans
Daily traffic
3,800
2023 count
Owner
State
State Highway Agency

About this bridge

Ramp Off I-526 WB over Filbin Creek is a prestressed concrete continuous stringer/multi-beam or girder 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 3,800 vehicles a day, roughly 9% of them trucks, projected to reach 8,702 by 2043. The structure is 612 ft (186.4 m) long and 25 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
Coordinates32.88982, -80.00987
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.9 US tons
Inventory rating30 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans6 (+8 approach)
Design loadHS 20 + Mod
Structure length612 ft (186.4 m)
Longest span63 ft (19.2 m)
Deck width25 ft (7.7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,800 (2023)
Projected traffic8,702 by 2043
Trucks9%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$1.8 million (2024 estimate)
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 August 2024.

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

About 3,800 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 612 ft (186.4 m) long with a longest span of 63 ft (19.2 m) and a deck 25 ft wide.

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

It is owned by the State Highway Agency.