I know exactly where it is. It's several miles south of the border and all of this intermediary space - in Oregon - is taken up with very high density city, mostly residences. In these residences are people who work in Portland and drive to work each day, taking the several on and on ramps along this route. As you drive south through this area in the morning, there is heavy congestion at each on-ramp as people are getting on 5 to go south to work. The school is also directly south of the 405 exchange and north of the 84 exchange, both being major point of congestion that daily intrastate and intracity work commuters use extensively.
