I was looking at the radar for a thunderstorm in Amarillo, and then I came upon something I hadn't thought about for a long time. Coming from the north, US-87/287 splits into two streets southbound, two streets northbound. It then combines into a single street that is US-87. Then US-87/I-27 goes to the south of town, but US-287 goes east, after combining with I-40 at the large interchange. US-287 then splits away from I-40.