SR 20 Extension over Friday Hbr-San Juan Chan
FairSan Juan County, Washington · NE End San Juan Isl · Structure no. 0008415A0000000
- Built
- 1968
- 57 years old, rebuilt 2005
- Condition
- Fair
- inspected September 2024
- Type
- Girder and Floorbeam System
- Steel
- Length
- 138 ft
- 3 main spans
- Daily traffic
- 2,587
- 2010 count
- Owner
- State
- State Highway Agency
About this bridge
SR 20 Extension over Friday Hbr-San Juan Chan is a steel girder and floorbeam system carrying SR 20 Extension over Friday Hbr-San Juan Chan in San Juan County, Washington. It was built in 1968 and reconstructed in 2005, 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 fair condition with a lowest component rating of 6 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 2,587 vehicles a day, roughly 3% of them trucks, projected to reach 4,470 by 2036. The structure is 138 ft (42.1 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 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 | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 20 Extension over Friday Hbr-San Juan Chan built?
It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2005.
What condition is SR 20 Extension over Friday Hbr-San Juan Chan 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 September 2024.
How much traffic does SR 20 Extension over Friday Hbr-San Juan Chan carry?
About 2,587 vehicles per day (2010 count), of which roughly 3% are trucks.
How long is SR 20 Extension over Friday Hbr-San Juan Chan?
The structure is 138 ft (42.1 m) long with a longest span of 90 ft (27.4 m) and a deck 24 ft wide.
Who owns SR 20 Extension over Friday Hbr-San Juan Chan?
It is owned by the State Highway Agency.