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

RT @NWSSeattle: A strong thunderstorm will bring very heavy rainfall, hail, and lightning to HWY 2 between Scenic and Stevens Pass over the…

On I-405 southbound just south of Lake Washington Blvd SE there is a disabled vehicle blocking the right lane.

@Kansashoopschat @wsdot @kt_dinh @seattledot We will likely need to work some weekends in September

RT @NWSSeattle: Thunderstorms are starting to pop up close to our area. While the Cascades are the primary area under the threat of storms,…

@AlexCuneo2 @FUIndividual1 You’re welcome. We know it’s frustrating to be stuck in traffic. If you want to read abo… https://t.co/tcYJy1Sb5J

Done-On SR 99 northbound & southbound at 1st Ave S Bridge all lanes closed today at 3:56 PM for boat traffic.

Cleared 3:57 PM : On I-5 southbound at SR 520 there is a collision blocking the left lane.

On SR 99 northbound & southbound at 1st Ave S Bridge all lanes closed today at 3:56 PM for boat traffic.

On SR 18 westbound at SR 161 there is a disabled vehicle blocking the left lane.

Work is going well on SB I-5 in Seattle as this crew chips out concrete at an old expansion joint. The SB backup st… https://t.co/UXJooRdxDS
Currently
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68°F |
29.87in
Barometer 65%
Humidity Southwest 10.4mph Wind |
A Few Clouds |