S-18-139 over I-26
FairDorchester County, South Carolina · 10.6 MI E ST George · Structure no. 000000000003262
- Built
- 1960
- 65 years old
- Condition
- Fair
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 279 ft
- 5 main spans
- Daily traffic
- 225
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-18-139 over I-26 is a prestressed concrete stringer/multi-beam or girder carrying S-18-139 over I-26 in Dorchester County, South Carolina. It was built in 1960, so it is 65 years old, older 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 225 vehicles a day, roughly 5% of them trucks, projected to reach 288 by 2043. The structure is 279 ft (85 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 km).
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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S-18-139 over I-26 built?
It was built in 1960, making it 65 years old in 2025.
What condition is S-18-139 over I-26 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 May 2023.
How much traffic does S-18-139 over I-26 carry?
About 225 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is S-18-139 over I-26?
The structure is 279 ft (85 m) long with a longest span of 60 ft (18.3 m) and a deck 30 ft wide.
Who owns S-18-139 over I-26?
It is owned by the State Highway Agency.