I think yours is a local problem probably caused by an incorrect Google map update.No been there as long as I have.
And the thing is. It's always used this route before.
That sounds like a similar issue to the one I have where Google seems to assume a direction of travel that may not make sense.Not sure if this is on or off the point, but if I park at the top of my drive pointing forwards, I get a different route out of town to if I park at the end. Since we are close to the city centre with its one way system, it can send you up the Mendips along some quite narrow roads. But once you have selected a route, it tends to want to stick to that route rather than completely resetting.