Mountain Loop Hwy. over Coal Creek
FairSnohomish County, Washington · 24.0 E JCT SR 92 · Structure no. 082284000000000
- Built
- 1949
- 76 years old
- Condition
- Fair
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 71 ft
- 1 main span
- Daily traffic
- 1,324
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Mountain Loop Hwy. over Coal Creek is a wood or timber stringer/multi-beam or girder carrying Mountain Loop Hwy. over Coal Creek in Snohomish County, Washington. It was built in 1949, so it is 76 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 1,324 vehicles a day, roughly 5% of them trucks, projected to reach 1,500 by 2045. The structure is 71 ft (21.5 m) long and 31 ft wide. If it were closed, the detour would be 93.8 mi (151 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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. |
| Channel and channel protection | 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 Mountain Loop Hwy. over Coal Creek built?
It was built in 1949, making it 76 years old in 2025.
What condition is Mountain Loop Hwy. over Coal Creek 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 August 2023.
How much traffic does Mountain Loop Hwy. over Coal Creek carry?
About 1,324 vehicles per day (2022 count), of which roughly 5% are trucks.
How long is Mountain Loop Hwy. over Coal Creek?
The structure is 71 ft (21.5 m) long with a longest span of 31 ft (9.4 m) and a deck 31 ft wide.
Who owns Mountain Loop Hwy. over Coal Creek?
It is owned by the County Highway Agency.