Portal Way over I-5
GoodWhatcom County, Washington · 9.0 N JCT SR 539 · Structure no. 0006568A0000000
- Built
- 1961
- 64 years old
- Condition
- Good
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 319 ft
- 4 main spans
- Daily traffic
- 3,000
- 2002 count
- Owner
- State
- State Highway Agency
About this bridge
Portal Way over I-5 is a prestressed concrete stringer/multi-beam or girder carrying Portal Way over I-5 in Whatcom County, Washington. It was built in 1961, so it is 64 years old, older 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 3,000 vehicles a day, roughly 5% of them trucks, projected to reach 5,346 by 2036. The structure is 319 ft (97.2 m) long and 36 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Portal Way over I-5 built?
It was built in 1961, making it 64 years old in 2025.
What condition is Portal Way over I-5 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 Portal Way over I-5 carry?
About 3,000 vehicles per day (2002 count), of which roughly 5% are trucks.
How long is Portal Way over I-5?
The structure is 319 ft (97.2 m) long with a longest span of 77 ft (23.5 m) and a deck 36 ft wide.
Who owns Portal Way over I-5?
It is owned by the State Highway Agency.