This story is free to read. Jackknifed tractor trailer on I-24 has traffic blocked both ways jack-knifed-tractor-trailer-i-24-has-traffic-block jack-knifed-tractor-trailer-i-24-has-traffic-block By Times Free Press Staff December 20, 2012 1 min read TDOT reported that a tractor trailer had jackknifed on Interstate 24 near the Germantown Road/Belvoir Ave exit. They estimated it may be cleared by 4 p.m. Eastbound traffic has all lanes blocked and west traffic has the left lanes blocked.