I-5 S-E Ramp over I-5 Mainline
FairThurston County, Washington · 2.4 N JCT SR 510 · Structure no. 0008100I0000000
- Built
- 1968
- 57 years old
- Condition
- Fair
- inspected November 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 369 ft
- 4 main spans
- Daily traffic
- 8,930
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-5 S-E Ramp over I-5 Mainline is a concrete continuous box beam or girders - multiple carrying I-5 S-E Ramp over I-5 Mainline in Thurston County, Washington. It was built in 1968, so it is 57 years old, older than the Washington average of 49.8 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 8,930 vehicles a day, roughly 4% of them trucks, projected to reach 12,490 by 2039. The structure is 369 ft (112.5 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-5 S-E Ramp over I-5 Mainline built?
It was built in 1968, making it 57 years old in 2025.
What condition is I-5 S-E Ramp over I-5 Mainline 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 November 2023.
How much traffic does I-5 S-E Ramp over I-5 Mainline carry?
About 8,930 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is I-5 S-E Ramp over I-5 Mainline?
The structure is 369 ft (112.5 m) long with a longest span of 108 ft (32.9 m) and a deck 27 ft wide.
Who owns I-5 S-E Ramp over I-5 Mainline?
It is owned by the State Highway Agency.