I can't speak on WA, but in Indiana our gas tax is at 54.5 cents per gallon. We have a base tax of 34 cents and then a monthly adjusted tax that is based on the average price of fuel. That puts us at roughly 5th highest in the US for tax.
With that, our transportation department (and state) will be facing a shortfall... Last time I checked, it's something like a 2.5 billion shortfall next year as a state and two years ago INDOT was projecting a billion shortfall over 10 years.
As part of our state leadership tax plan that was passed this year, the state cut taxes, but all it really did was shift the burden from the state level to the county level. So while property taxes were cut, the max county income tax rate was increased and cities/towns can now have an income tax rate. To participate in state grant programs, counties now have to add additional taxes (ex, a wheel tax has to be implemented if you want to be able to receive road/bridge grants from the state).
The state government in Indiana loves to brag about low taxes and push everything down to the local level so they don't get blamed for it.
For local governments in Indiana