US Bridges

I-526 WB over Hobcaw Creek

Fair

Charleston County, South Carolina · Near Mt. Pleasant · Structure no. 000000000008332

Built
1990
35 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete Continuous
Length
390 ft
13 main spans
Daily traffic
30,900
2023 count
Owner
State
State Highway Agency

About this bridge

I-526 WB over Hobcaw Creek is a concrete continuous slab carrying I-526 WB over Hobcaw Creek in Charleston County, South Carolina. It was built in 1990, so it is 35 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 5 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 30,900 vehicles a day, roughly 4% of them trucks, projected to reach 47,586 by 2043. The structure is 390 ft (118.9 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-526 WB
CrossesHobcaw Creek
LocationNear Mt. Pleasant
RouteInterstate 526
Coordinates32.83411, -79.85352
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
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 geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating49.3 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 width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,900 (2023)
Projected traffic47,586 by 2043
Trucks4%
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-526 WB over Hobcaw Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is I-526 WB over Hobcaw 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 Hobcaw Creek carry?

About 30,900 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is I-526 WB over Hobcaw Creek?

The structure is 390 ft (118.9 m) long with a longest span of 30 ft (9.1 m) and a deck 47 ft wide.

Who owns I-526 WB over Hobcaw Creek?

It is owned by the State Highway Agency.