The connector road between the southbound 215 and eastbound 60 will also be closed.
"I'm not really familiar with the area, and so it makes it really difficult for me, so I've been going to these side streets," said commuter Marsha Martin.
Large chunks of concrete from the overpass fell onto the road on Aug. 31. No one was hurt, but officials will investigate to determine the cause of the incident.
"We're looking at the bridge design, we're looking at the materials and the construction, and we want to find out exactly what happened so we can make sure this doesn't happen again," said Jason Goldman of Caltrans.
The original bridge was built in the 1960s, and then a new section was added a few years ago. The problem happened where the old and new bridge come together.
"The concrete fell around that hinge, so we want to find out why," Goldman said.
The following detours are available for motorists:
Take the westbound (WB) SR-60 connector, continue on WB SR-60 to the Market Street exit, turn left, go under the freeway and then turn left to enter EB SR-60. Continue on EB SR-60 to SB I-215.
Or continue on SB I-215 to WB SR-91, take the Mission Inn Avenue exit, turn left, go under the freeway and then turn left to enter EB SR-91. Take the connector on the right to enter SB I-215 / EB SR-60.
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