US Bridges

I-526 WB over Ashley River&bull Creek

Fair

Charleston County, South Carolina · 5.9 MI NW Charleston · Structure no. 000000000007330

Built
1980
45 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
3,907 ft
3 main spans
Daily traffic
40,750
2023 count
Owner
State
State Highway Agency

About this bridge

I-526 WB over Ashley River&bull Creek is a steel continuous stringer/multi-beam or girder carrying I-526 WB over Ashley River&bull Creek in Charleston County, South Carolina. It was built in 1980, so it is 45 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 40,750 vehicles a day, roughly 6% of them trucks, projected to reach 62,755 by 2043. The structure is 3,907 ft (1,191 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-526 WB
CrossesAshley River&bull Creek
Location5.9 MI NW Charleston
RouteInterstate 526
Coordinates32.83337, -80.02656
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.3 US tons
Inventory rating41.4 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+77 approach)
Design loadHS 20
Structure length3,907 ft (1,191 m)
Longest span120 ft (36.6 m)
Deck width43 ft (13.1 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40,750 (2023)
Projected traffic62,755 by 2043
Trucks6%
Lanes on structure2
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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was I-526 WB over Ashley River&bull Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is I-526 WB over Ashley River&bull 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 I-526 WB over Ashley River&bull Creek carry?

About 40,750 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is I-526 WB over Ashley River&bull Creek?

The structure is 3,907 ft (1,191 m) long with a longest span of 120 ft (36.6 m) and a deck 43 ft wide.

Who owns I-526 WB over Ashley River&bull Creek?

It is owned by the State Highway Agency.