... ORRRRR.... make transit efficient, effective, direct and a more viable option for more folks.
Don't unnecessarily create congestion, but rather provide better alternatives.
If you want to make transit more efficient, effective, and
reliable (i.e., a more viable option), you're going to have to give up some space for transit-priority/transit-only infrastructure such as bus-only lanes, BRT, LRT, etc. As long as we insist on putting busses in the same lanes as cars, it will never be more than a second-class transportation method, and will continue to be stigmatized as being only for "poor people."
Congestion is a fact of a growing and sprawling city, and its coming whether we take the lanes now, later, or not at all; the difference is it becomes an even harder pill to swallow the longer we put it off when congestion is worse than it is now.
Also, not sure why you're raising this as a concern in this thread; even after this current widening, there's still plenty of space to work with on Terwilligar to provide transit-priority infrastructure.