Update: 10:50 a.m. - Troopers have reopened all NB and SB lanes on I-275 after two tractor trailer crashes Sunday morning. 

Original Report: Troopers are on scene of two tractor trailer crashes on I-275 northbound and southbound at milemarker 44 and 45. 

Just before 8 a.m., troopers said a tractor trailer jackknifed on I-275 northbound at milemarker 44 in Tampa, closing all but one lane. 

Troopers said a second trailer traveling southbound on I-275 at milemarker 45 stuck the inside concrete barrier wall, also closing all but one lane. 

Troopers said tow trucks are headed to the scene to clear the area and motorists should expect delays.