AMP: 255 Location: I-10 and Miracle Mile, Tucson Reassurance shield after the Miracle Mile interchange AMP: 256 Location: I-10 and Speedway Blvd, Tucson Reassurance shield after the Speedway interchange AMP: 258 Location: I-10 and Congress St, Tucson After the Congress St interchange, we’re 1.5 miles from I-19 AMP: 258 Location: I-10 and Congress St, Tucson … Continue reading Interstate 10, SR 77 to I-19