TULSA, Oklahoma - A jackknifed semi on northbound Highway 75 near Southwest Boulevard has been towed away and the northbound lanes reopened just before 7 a.m.

The crash shut down all northbound lanes and caused a big backup early Wednesday.

Tulsa Police say the semi was traveling south on 75 when it went off the highway and into the northbound lanes. 

They say northbound traffic was forced to exit at 41st Street.

No injuries were reported in the crash.