Chestnut St-Bay ST over Burlington Northern
FairWhatcom County, Washington · At JCT W Chestnut/Bay ST · Structure no. 085526000000000
- Built
- 1930
- 95 years old, rebuilt 1988
- Condition
- Fair
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 300 ft
- 7 main spans
- Daily traffic
- 6,000
- 2021 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Chestnut St-Bay ST over Burlington Northern is a prestressed concrete continuous stringer/multi-beam or girder carrying Chestnut St-Bay ST over Burlington Northern in Whatcom County, Washington. It was built in 1930 and reconstructed in 1988, so it is 95 years old, older than the Washington average of 49.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 6,000 vehicles a day, roughly 5% of them trucks, projected to reach 9,800 by 2043. The structure is 300 ft (91.4 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Chestnut St-Bay ST over Burlington Northern built?
It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1988.
What condition is Chestnut St-Bay ST over Burlington Northern in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.
How much traffic does Chestnut St-Bay ST over Burlington Northern carry?
About 6,000 vehicles per day (2021 count), of which roughly 5% are trucks.
How long is Chestnut St-Bay ST over Burlington Northern?
The structure is 300 ft (91.4 m) long with a longest span of 36 ft (11 m) and a deck 44 ft wide.
Who owns Chestnut St-Bay ST over Burlington Northern?
It is owned by the City or Municipal Highway Agency.