Two developing sinkholes were discovered on the ramps to eastbound I-96 from Southfield Freeway.

It was originally thought just a concrete repair was needed, but it turns out a drain pipe broke and needs to be fixed, too.

The difference in repair means it is unclear when the ramps will reopen.

Tens of thousands of drivers now face indefinite detours because of sinkholes on Detroit freeway ramps.

The Michigan Department of Transportation previously announced a sinkhole that would require about weeklong closures of the ramps to eastbound Interstate 96 from northbound and southbound Southfield Freeway, or M-39.

But it’s actually two sinkholes and, according to an MDOT spokeswoman, the cause requires more than the concrete repairs initially thought.

The beginnings of the sinkholes were

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