S-18-610/ALONZO RD over Gum Branch
FairDorchester County, South Carolina · 3.6 MI SE ST George · Structure no. 000000000008153
- Built
- 1988
- 37 years old
- Condition
- Fair
- inspected April 2023
- Type
- Slab
- Concrete Continuous
- Length
- 90 ft
- 3 main spans
- Daily traffic
- 500
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-18-610/ALONZO RD over Gum Branch is a concrete continuous slab carrying S-18-610/ALONZO RD over Gum Branch in Dorchester County, South Carolina. It was built in 1988, so it is 37 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 500 vehicles a day, roughly 5% of them trucks, projected to reach 640 by 2043. The structure is 90 ft (27.4 m) long and 37 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S-18-610/ALONZO RD over Gum Branch built?
It was built in 1988, making it 37 years old in 2025.
What condition is S-18-610/ALONZO RD over Gum Branch 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 April 2023.
How much traffic does S-18-610/ALONZO RD over Gum Branch carry?
About 500 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is S-18-610/ALONZO RD over Gum Branch?
The structure is 90 ft (27.4 m) long with a longest span of 30 ft (9.1 m) and a deck 37 ft wide.
Who owns S-18-610/ALONZO RD over Gum Branch?
It is owned by the State Highway Agency.