US Bridges

Ramp on I-526 WB over Filbin Creek & RR CSXT

Fair

Charleston County, South Carolina · In N. Charleston · Structure no. 000000000008529

Built
1992
33 years old, rebuilt 2000
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
2,722 ft
13 main spans
Daily traffic
7,000
2023 count
Owner
State
State Highway Agency

About this bridge

Ramp on I-526 WB over Filbin Creek & RR CSXT is a prestressed concrete continuous stringer/multi-beam or girder carrying Ramp on I-526 WB over Filbin Creek & RR CSXT in Charleston County, South Carolina. It was built in 1992 and reconstructed in 2000, 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 7,000 vehicles a day, roughly 9% of them trucks, projected to reach 16,030 by 2043. The structure is 2,722 ft (829.8 m) long and 25 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRamp on I-526 WB
CrossesFilbin Creek & RR CSXT
LocationIn N. Charleston
RouteInterstate 526
Coordinates32.89361, -79.97691
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.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating29.7 US tons
Inventory rating22.8 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans13 (+58 approach)
Design loadHS 20 + Mod
Structure length2,722 ft (829.8 m)
Longest span105 ft (32 m)
Deck width25 ft (7.7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,000 (2023)
Projected traffic16,030 by 2043
Trucks9%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad and waterway
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$9.9 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ramp on I-526 WB over Filbin Creek & RR CSXT built?

It was built in 1992, making it 33 years old in 2025. It was reconstructed in 2000.

What condition is Ramp on I-526 WB over Filbin Creek & RR CSXT 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 on I-526 WB over Filbin Creek & RR CSXT carry?

About 7,000 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Ramp on I-526 WB over Filbin Creek & RR CSXT?

The structure is 2,722 ft (829.8 m) long with a longest span of 105 ft (32 m) and a deck 25 ft wide.

Who owns Ramp on I-526 WB over Filbin Creek & RR CSXT?

It is owned by the State Highway Agency.