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Sinkhole closes Modesto Highway 99 on-ramp, CHP says

A sinkhole that opened up along the side of a Modesto freeway on-ramp has the road closed for the time being.

California Highway Patrol announced the closure Monday morning. The sinkhole is on the Highway 99 on-ramp from 4th Street.

It's unclear what is causing the sinkhole, but the on-ramp will be closed for the time being as crews work on a fix.

No estimated time of reopening has been given so far, CHP says. Drivers will have to detour around the closure by using the next on-ramp. 

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