S-10-475 over I-526 Mark Clark Expwy
FairCharleston County, South Carolina · At N Charleston · Structure no. 000000000007332
- Built
- 1980
- 45 years old
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 250 ft
- 4 main spans
- Daily traffic
- 6,500
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-10-475 over I-526 Mark Clark Expwy is a steel continuous stringer/multi-beam or girder carrying S-10-475 over I-526 Mark Clark Expwy 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 6,500 vehicles a day, roughly 4% of them trucks, projected to reach 8,905 by 2043. The structure is 250 ft (76.2 m) long and 77 ft wide.
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S-10-475 over I-526 Mark Clark Expwy built?
It was built in 1980, making it 45 years old in 2025.
What condition is S-10-475 over I-526 Mark Clark Expwy 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 2023.
How much traffic does S-10-475 over I-526 Mark Clark Expwy carry?
About 6,500 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is S-10-475 over I-526 Mark Clark Expwy?
The structure is 250 ft (76.2 m) long with a longest span of 86 ft (26.2 m) and a deck 77 ft wide.
Who owns S-10-475 over I-526 Mark Clark Expwy?
It is owned by the State Highway Agency.