Mason County, WA Traffic and Road Conditions

 

Mason County Traffic Map

No Traffic Flow? Zoom in Closer

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.

Click any alert icons on the map to see info.

Mason County Traffic Alerts

For official WA traffic info visit: Washington State 511 site

WSDOT Traffic on Twitter

@wsdot_traffic twitter icon

On SR 520 eastbound just east of West Lake Sammamish Pkwy there is a collision blocking the right lane.

Dec 2, 2022, 12:25 am PST replyretweetfavorite
@wsdot_traffic twitter icon

On I-5 northbound just south of S 320th St there is a collision blocking the HOV lane.

Dec 1, 2022, 11:55 pm PST replyretweetfavorite
@wsdot_traffic twitter icon

On the I-5 northbound collector-distributor at James St there is a disabled vehicle blocking the left lane.

Dec 1, 2022, 10:45 pm PST replyretweetfavorite
@wsdot_traffic twitter icon

Done-On SR 99 northbound & southbound at 1st Ave S Bridge all lanes closed tonight at 8:10 PM for boat traffic.

Dec 1, 2022, 9:20 pm PST replyretweetfavorite
@wsdot_traffic twitter icon

On SR 99 northbound & southbound at 1st Ave S Bridge all lanes closed tonight at 8:10 PM for boat traffic.

Dec 1, 2022, 8:15 pm PST replyretweetfavorite
@wsdot_traffic twitter icon

On I-5 southbound just south of SR 516 there is a disabled vehicle blocking the right lane.

Dec 1, 2022, 7:05 pm PST replyretweetfavorite
@wsdot_traffic twitter icon

Update 6:17 PM : On the I-5 northbound off-ramp to I-405 there is a disabled vehicle blocking the right lane.

Dec 1, 2022, 6:20 pm PST replyretweetfavorite
@wsdot_traffic twitter icon

❗️❄️This information from our friends @NWSSeattle about black ice is super important. Remember to slooooooow down… https://t.co/3PAXr3pdrL

Dec 1, 2022, 5:58 pm PST replyretweetfavorite
@wsdot_traffic twitter icon

🚨I-5 EXPRESS LANES UPDATE↕️ ⏰The I-5 Express Lanes in #Seattle, currently northbound, will reverse to southbound a… https://t.co/FmTebRW2hw

Dec 1, 2022, 5:40 pm PST replyretweetfavorite
@wsdot_traffic twitter icon

On I-5 southbound just north of I-405 there is a disabled vehicle blocking the left center lane.

Dec 1, 2022, 5:30 pm PST replyretweetfavorite

Currently

Freezing Fog 23°F
29.96in
Barometer
96%
Humidity
North 0.0mph
Wind
Freezing Fog

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