I-705 over 15th ST & Bnrr Prairie L
GoodPierce County, Washington · 1.1 N JCT I-5 · Structure no. 0012747A0000000
- Built
- 1986
- 39 years old
- Condition
- Good
- inspected October 2023
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete Continuous
- Length
- 1,910 ft
- 13 main spans
- Daily traffic
- 26,174
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-705 over 15th ST & Bnrr Prairie L is a prestressed concrete continuous box beam or girders - single or spread carrying I-705 over 15th ST & Bnrr Prairie L in Pierce County, Washington. It was built in 1986, so it is 39 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 26,174 vehicles a day, roughly 4% of them trucks, projected to reach 39,077 by 2039. The structure is 1,910 ft (582.2 m) long and 42 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-705 over 15th ST & Bnrr Prairie L built?
It was built in 1986, making it 39 years old in 2025.
What condition is I-705 over 15th ST & Bnrr Prairie L 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 October 2023.
How much traffic does I-705 over 15th ST & Bnrr Prairie L carry?
About 26,174 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is I-705 over 15th ST & Bnrr Prairie L?
The structure is 1,910 ft (582.2 m) long with a longest span of 150 ft (45.7 m) and a deck 42 ft wide.
Who owns I-705 over 15th ST & Bnrr Prairie L?
It is owned by the State Highway Agency.