SB SR 539 over Nooksack R Overflow
GoodWhatcom County, Washington · 1.7 N JCT SR 544 · Structure no. 0017469B0000000
- Built
- 2009
- 16 years old
- Condition
- Good
- inspected May 2022
- Type
- Slab
- Prestressed Concrete Continuous
- Length
- 435 ft
- 7 main spans
- Daily traffic
- 7,931
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SB SR 539 over Nooksack R Overflow is a prestressed concrete continuous slab carrying SB SR 539 over Nooksack R Overflow in Whatcom County, Washington. It was built in 2009, so it is 16 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 7,931 vehicles a day, roughly 6% of them trucks, projected to reach 12,168 by 2039. The structure is 435 ft (132.6 m) long and 42 ft wide. If it were closed, the detour would be 8.7 mi (14 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 | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SB SR 539 over Nooksack R Overflow built?
It was built in 2009, making it 16 years old in 2025.
What condition is SB SR 539 over Nooksack R Overflow 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 May 2022.
How much traffic does SB SR 539 over Nooksack R Overflow carry?
About 7,931 vehicles per day (2023 count), of which roughly 6% are trucks.
How long is SB SR 539 over Nooksack R Overflow?
The structure is 435 ft (132.6 m) long with a longest span of 64 ft (19.5 m) and a deck 42 ft wide.
Who owns SB SR 539 over Nooksack R Overflow?
It is owned by the State Highway Agency.