UPDATE: As of 4:45 a.m., all lanes of Interstate 24 westbound at the US-27 junction are open. 

PREVIOUS STORY: As of 1:20 a.m., westbound lanes of Interstate 24 were closed after a tractor trailer jack-knifed around midnight Wednesday. The crash Highway 27 caused s delays overnight.

Chattanooga dispatch confirms with Channel 3 that the semi was leaking some oil from the axle. The Chattanooga Fire Department is now on scene to help with the cleanup. 

As of 12:50 a.m., the right westbound lane of 24 near the 27 split is blocked.

Use caution if driving in this area overnight. This crash is not expected to clear until around 3 a.m. according to TDOT and THP.