There are a lot of cars on the roads. Why? People live far away from their work. Why? All the office buildings are in one central place. Why? ... Etc.
The solutions to the root causes, whatever they are, are, unfortunately, a lot more complex and expensive than adding lanes or tolls. However, knowing the root cause allows us to implement policies and laws that can incentivize behaviors to address the root cause in the long term.
For example, change zoning laws for a better mix of commercial and residential within smaller areas.
Increase the cost of vehicle registration or gas taxes to encourage workers to prefer jobs closer to their home. Tolls on major highways rather than smaller streets can be part of this.
Provide free public transit in areas that meet requirements of commercial/residential mix.
These are just ideas. I don't know the real root causes, but a single policy won't help unless it's part of a comprehensive plan to reduce the NEED to travel and travel long distances.