Snoqualmie Pass Traffic and Road Conditions
Snoqualmie Pass Traffic Map
How to use the Snoqualmie Pass Traffic Map
Traffic flow lines: Red lines = Heavy traffic flow, Yellow/Orange lines = Medium flow and Green = normal traffic or no traffic*. Black lines or No traffic flow lines could indicate a closed road, but in most cases it means that either there is not enough vehicle flow to register or traffic isn't monitored. Also, If you do not see traffic flow, you can zoom in closer to reveal localized data. If you are unable to pan the map, press here (to focus off of the map) and try again.
* In known extreme weather events or accidents, the map provider may still show green lines, even if lanes or the entire road is closed.
Traffic Alert


- Click or touch the map to move in different directions.
- If you do not see any markers on the map, try zooming in one or two levels using "+" on the top left side. However, they are not always available.
- Click an incident icon on the map to get more information.
Snoqualmie Pass Traffic Alerts
WSDOT Traffic on Twitter

Done-On SR 99 northbound & southbound at 1st Ave S Bridge all lanes closed today at 1:21 PM for boat traffic.

On SR 167 northbound just south of I-405 there is a disabled vehicle blocking the right center lane.

On SR 99 northbound & southbound at 1st Ave S Bridge all lanes closed today at 1:21 PM for boat traffic.

Update 1:13 PM : On the I-5 southbound on-ramp from Iowa St there is a collision partially blocking the ramp.

On I-405 northbound just north of NE 195th St there is a disabled vehicle partially blocking the toll lane.

RT @SeaTacWA: Now's your chance, @wsdot_traffic @wsdot wants to hear from YOU! The SR 509 open house is up, please provide feedback. This p…

The collision has CLEARED to the right shoulder of the off-ramp from northbound I-405 to SR 169. All lanes of north… https://t.co/sl8c2wPLhg

We have a jackknifed truck and trailer on northbound I-405 at SR 169. It's currently blocking the left two lanes (H… https://t.co/3Y4sAaW3HE

On I-405 northbound at SR 169 there is a collision blocking the 2 left lanes.
Currently
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62°F |
30.20in
Barometer 54%
Humidity South 5.8mph Wind |
Overcast |