Location: 1st Ave and West Ave, Clayton A few blocks later and we’ll come to a junction with SR 538 Location: 1st Ave and West St, Clayton As we get ready to head out of Clayton, turn left for SR 538. 538 is just a quick westerly outer route that heads north to 56/64/412 and … Continue reading U.S. Route 87, NM-402 to NM-538