Things were smoothed over early Friday evening after a sinkhole shut traffic on the Mount Vernon Avenue Bridge, snarling traffic for morning commuters going north and south in the city.
Mount Vernon Avenue reopened at about 5 p.m., authorities said. Before that, Colton police had set up a pair of detours for drivers using the roadway.
The sinkhole occurred early Friday because of recent rains and also from last year’s rains, said Victor Ortiz, a civil engineer with the city.
The sinkhole was first reported to Colton police around 7:50 a.m., police Cpl. Ray Mendez said.
Police said about 10 vehicles were damaged by the hole – including an Omnitrans bus – as they drove over the hole, which got progressively worse.
City crews filled the hole Friday and placed a temporary steel plate over it with the aim of reopening the bridge later Friday, Ortiz said.
Ortiz said the sinkhole and bridge were inspected and that inspectors determined that the hole – roughly 6 to 10 feet deep and about 15 by 10 feet wide – would not affect the structural integrity of the bridge.
Police had diverted northbound drivers toward the 10 Freeway, to M Street, which allowed eastbound travel to La Cadena Drive.
On the other side of the freeway, drivers heading south were directed to use either Valley Boulevard or the freeway.