AMP: 0 Location: Grand Ave and Crawford St, Nogales As we cross in from Mexico, we’ll come to I-19 at the first light. Turn left for I-19, which heads a couple blocks west as a non-freeway before turning into freeway. Stay straight for 19 business north. This is an unusual situation because the interstate ends … Continue reading Interstate 19 Business, SON Int’l Boundary to I-19