A large buckle formed in the middle of northbound Interstate 35W Tuesday afternoon, causing traffic problems through rush hour and into the evening.
Traffic on a three-lane stretch of the highway was reduced to just one lane just north of downtown near Texas 121, where I-35W crosses the Trinity River.
Officials with North Tarrant Infrastructure, the firm overseeing a $1-billion-plus makeover of the highway, and Fort Worth city workers were still trying to determine the cause of the buckle Tuesday night, spokeswoman Heather DeLapp said.
She said that the lane closures likely would continue until about midnight but that morning commuters should not be affected.
Passers-by reported the buckle about 2 p.m. Tuesday, saying the bump appeared to be at least 2 feet high. According to one report, several vehicles scraped their undercarriages on the hump, causing significant damage, after the drivers didn’t notice the obstruction in time to slow down or avoid it.