Main Street over I-5
GoodWhatcom County, Washington · 6.3 N JCT SR 539 · Structure no. 0008302A0000000
- Built
- 1968
- 57 years old
- Condition
- Good
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 265 ft
- 4 main spans
- Daily traffic
- 21,793
- 2012 count
- Owner
- State
- State Highway Agency
About this bridge
Main Street over I-5 is a prestressed concrete continuous stringer/multi-beam or girder carrying Main Street over I-5 in Whatcom 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 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 21,793 vehicles a day, roughly 1% of them trucks, projected to reach 33,823 by 2036. The structure is 265 ft (80.8 m) long and 37 ft wide. If it were closed, the detour would be 6.2 mi (10 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 Main Street over I-5 built?
It was built in 1968, making it 57 years old in 2025.
What condition is Main Street 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 April 2023.
How much traffic does Main Street over I-5 carry?
About 21,793 vehicles per day (2012 count), of which roughly 1% are trucks.
How long is Main Street over I-5?
The structure is 265 ft (80.8 m) long with a longest span of 97 ft (29.6 m) and a deck 37 ft wide.
Who owns Main Street over I-5?
It is owned by the State Highway Agency.