Thousands of drivers trying to get to Corpus Christi this holiday weekend have found themselves in a traffic nightmare.On the morning of Friday, Dec. 20, the KRIS 6 Newsroom received calls and messages from viewers asking what was happening on southbound Interstate-37. KRIS 6 quickly learned that several lanes were closed on portions of southbound I-37 due to construction. The traffic situation became worse when a tractor semi-trailer hit a guardrail and began leaking oil. Crews arrived and cleared the roadway, reopening lanes at 11:16 a.m.One driver told KRIS 6 News that traffic was "stop and go" near Whitsett and they were able to travel three miles in half an hour. Then, around 1 p.m., DPS troopers were dispatched to another crash, this time on the northbound side of I-37 near mile marker 81 about a mile south of the Live Oak county rest area.DPS is asking drivers to be patient on the roadways.