Its also not just about pure volume/congestion. It's extremely disruptive to people/businesses along that route w/o nearby stop lights and while I don't drive the route all that often I regularly see people make very dangerous turns in front of traffic because they're tired of waiting for a safe opportunity.
It's also a route that has been targeted for large new developments - so the current situation is going to get significantly worse.
It's also a route that has been targeted for large new developments - so the current situation is going to get significantly worse.