Fresno/Tulare County Route J40 is 17.19 miles and was defined in 1974. County Route J40 begins at California State Route 99 near Selma. From California State Route 99 the routing of County Route J40 follows Mountain View Avenue, El Monte Way and Avenue 416 to California State Route 63 in Orosi.
https://www.gribblenation.org/2023/08/fresnotulare-county-route-j40.html
I was just there this weekend, for a quick Yosemite trip. Looks like there is ongoing construction in Selma, specifically near the 43/99 junction.