Well, Caltrans is responsible for highways and state routes, not roads per se. That is usually local government. Also, not sure if you are complaining about road surface conditions or the amount being spent on emergency repairs?
Most all of the repairs are due to slipouts, washouts, and slides, none of which have to do with road surface adhesion, but soil and undermining of roads and slopes due to erosion from saturated earth.
It seems you are complaining to complain about how inefficient Caltrans is. Caltrans is doing more with less these days. The budget has been reduced by a third and we are down 3,500 positions in norcal alone. How does that equate to storm damage?
Many of the roads that have been affected by the storms are in rural jurisdictions where slides and slips are common given the fact we can't simply level a forest to make a road impervious to weather.
Engineers work tirelessly to solve these problems, but mother nature is a bitch and sometimes it doesn't matter how well intentioned our efforts are.
So are you complaining that too much money is being spent and that there's a better system you are suggesting? Or are you complaining about road conditions?
Just so you know these slides cost a lot of money to clear and performed by local private contractors. Caltrans performs nearly NONE of this work except for oversight and project management. Most of the money is going to working men and women in the community.