13 Alert Traffic: Heavy truck crash blocking some lanes on I-45 SB at Greens Road, TranStar shows

HOUSTON, Texas (KTRK) -- A heavy truck is causing delays for some drivers along the North Freeway on Wednesday morning.

Houston TranStar reported the single-vehicle incident and hazmat spill on I-45 North Freeway southbound before Greens Road.

TranStar cameras showed the backups on the freeway.