Smoke from wildfires in New Mexico has forced closure of I-25 southbound south of Trinidad, Colo., and both directions of I-25 in New Mexico for eight miles to the Colorado state line. The state departments of transportation didn’t estimate a reopening time.

Alternate routes include U.S. 160 west from Walsenburg to CO 159 at Ft. Garland or U.S. 285 at Alamosa. Also, U.S. 160 east from Trinidad to CO 389.