Mason County, WA Traffic and Road Conditions
Mason County Traffic Map
How to use the Mason County 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.
Mason County Traffic Alerts
WSDOT Traffic on Twitter

On the I-5 northbound & southbound off-ramp to West Seattle Freeway there is a collision blocking the ramp.

On I-5 northbound just north of Iowa St there is a collision blocking the right lane.

On I-90 westbound just east of I-405 there is a collision blocking the right center lane.

Here's a look at the collision SR 167 northbound just south of I-405 in #Renton blocking the 2 right lanes. Fire a… https://t.co/EsPyHCw2tY

On the SR 167 southbound off-ramp to S 277th St there is a disabled vehicle blocking the center lane.

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

Cleared 5:53 PM : On I-5 southbound at SR 18 there is a disabled vehicle blocking the left center lane.

CLEARED: This collision on I-5 southbound just north of Boeing Access Rd is now clear. All lanes are open. There… https://t.co/W8PiZrZ5SH

Cleared 5:30 PM : On the I-405 northbound off-ramp to SR 520 there is a disabled vehicle blocking the left lane.
Currently
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29.74in
Barometer 97%
Humidity North 0.0mph Wind |
A Few Clouds |