landscaped boulevard (Oklahoma City Boulevard) was completed in 2019, replacing the original I-40 Crosstown Bridge right-of-way through downtown Oklahoma City, similar to the I-30 reconstruction through downtown Fort Worth, Texas. Business routes and old alignments 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. Interstate 40 Business (I-40 Bus., formerly US-66) in Erick is a business loop that runs from I-40 west of Erick to the old alignment of US-66, through Erick, and back to I-40 east of Erick. I-40 Bus. (formerly US-66) in Sayre is a business loop that begins south of Sayre at US-283, runs north into the city, and then leaves Sayre to the east, rejoining I-40 east of US-283. I-40 Bus. (formerly US-66) in Elk City is a business loop that begins at exit 32 west of Elk City. It runs for through Elk City, rejoining I-40 at exit 41. I-40 Bus. (formerly US-66) in Clinton is a business loop that begins at exit 65, runs through Clinton, and rejoins I-40 at exit 69. I-40 Bus. (formerly US-66) in Weatherford is a business loop that exits I-40 at exit 82B, runs through Weatherford, and rejoins I-40 at exit 82. I-40 Bus. (formerly US-66) in El Reno is a business loop that exits I-40 at exit 119, runs through El Reno, and rejoins I-40 at exit 125, the interchange with US-81. I-40 Bus. (formerly US-62/US-75) in Henryetta is a business loop that leaves I-40 at exit 237, runs through Henryetta, and rejoins I-40 at exit 240, the interchange with US-75 and the Indian Nation Turnpike. I-40 Bus. in Sallisaw is a business loop that leaves I-40 at exit 308 (US-59) runs through Sallisaw, and rejoins I-40 at exit 311, US-64. Exit list Auxiliary route I-40 has one auxiliary route in Oklahoma: : A bypass of the southside of Oklahoma City See also U.S. Route 66 in Oklahoma References External links I-40 at OKHighways.com I-40 at AARoads 40 Oklahoma Transportation in Beckham County, Oklahoma Transportation in Washita County, Oklahoma Transportation in Custer County, Oklahoma Transportation in Caddo County, Oklahoma Transportation in Canadian County, Oklahoma Transportation in Oklahoma County, Oklahoma Transportation in Pottawatomie County, Oklahoma Transportation in Seminole County, Oklahoma Transportation in Okfuskee County, Oklahoma Transportation in Okmulgee County, Oklahoma Transportation in McIntosh County, Oklahoma Transportation in Muskogee