UPDATE, 2:49 p.m.: The site is now cleared.
Ky. 91 is blocked by an injury crash near the 14 mile marker in Caldwell County. This is just north of the Ky. 139 intersection between Princeton and Fredonia.
Two commercial trucks have collided head-on at this site with a substantial fuel spill that will require clean up.
Estimated duration is three hours.
KyTC personnel have assisted police and fire units with establishing a detour via Ky. 139 and Ky. 70.