I-40 enters Oklahoma near Texola in Beckham County. It crosses the North Fork of the Red River near Sayre and runs through southern Elk City. It then cuts across northwest Washita County before entering See more

West of Oklahoma City, I-40 parallels and replaces Old US-66. US-66 was decommissioned in Oklahoma in 1985.
Bridge collapse
The I-40 bridge over the See more

I-40 has eight business routes in Oklahoma, six of which are old alignments of US-66. A number of other old alignments of US-66 are also present west of Oklahoma City. See more

• U.S. Route 66 in Oklahoma See more

The original I-40 Oklahoma City Crosstown Expressway was built in 1966 mostly as an elevated route; however, this former stretch was too narrow for existing traffic and was frequently in disrepair. In response, the I-40 Crosstown Expressway has been relocated … See more

I-40 has one auxiliary route in Oklahoma:
• I-240: A bypass of the southside of Oklahoma City See more