I-705 SB over Terrain
GoodPierce County, Washington · 0.1 N JCT I-5 · Structure no. 0012992E0000000
- Built
- 1988
- 37 years old
- Condition
- Good
- inspected August 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 125 ft
- 1 main span
- Daily traffic
- 20,205
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-705 SB over Terrain is a prestressed concrete continuous box beam or girders - multiple carrying I-705 SB over Terrain in Pierce County, Washington. It was built in 1988, so it is 37 years old, younger than the Washington average of 49.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 20,205 vehicles a day, roughly 4% of them trucks, projected to reach 30,166 by 2039. The structure is 125 ft (38.1 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-705 SB over Terrain built?
It was built in 1988, making it 37 years old in 2025.
What condition is I-705 SB over Terrain in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.
How much traffic does I-705 SB over Terrain carry?
About 20,205 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is I-705 SB over Terrain?
The structure is 125 ft (38.1 m) long with a longest span of 125 ft (38.1 m) and a deck 45 ft wide.
Who owns I-705 SB over Terrain?
It is owned by the State Highway Agency.