This app was mentioned in 4 comments, with an average of 2.25 upvotes
Washington State Department of Transportation has a really nice app that shows all the highway cameras. For android, here is the link https://play.google.com/store/apps/details?id=gov.wa.wsdot.android.wsdot
They also have an iPhone app too.
Personally I think this app has everything that I need. https://play.google.com/store/apps/details?id=gov.wa.wsdot.android.wsdot
I didn't get to take the survey, what kind of features are you looking for?
Google Play (Android) https://play.google.com/store/apps/details?id=gov.wa.wsdot.android.wsdot
iTunes (Apple) https://itunes.apple.com/us/app/wsdot/id387209224?mt=8
Here ya go