Transportation engineers cannot say why a piece of concrete plummeted from Interstate 215 in Riverside to the city street below, leaving a hole in a section of freeway that crews overhauled less than four years ago.
A section of concrete about 3 feet long and 2 feet wide fell about 5:40 a.m. Tuesday from a bridge that spans Chicago Avenue. The freeway, some of it less than 4 years old, was rebuilt atop Chicago as part of the 60 /91 /215 interchange project.
Determining the cause is crucial to fixing it, determining whether the problem is more widespread and figuring out who is responsible, Caltrans spokesman Jason Goldman said.
The worry on Tuesday was the integrity of other work on the project, as workers closed three lanes to repair the hole. Crews wrapped up and lanes were reopened around 6 p.m.
“The question is, is this an isolated incident?” said John Standiford, deputy director of the Riverside County Transportation Commission.