Ruston Tunnel Safety Concerns

UPDATE: 4:15 pm: The tunnel has been open all afternoon, so it presumed that the structure passed the inspection and was found safe. I've asked the mayor to confirm that fact and any information he gives when he responds.
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UPDATE: 9:15 am: The tunnel is now closed temporarily and traffic is being detoured up Ferdinand and at Bennett and 51st Street.
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I'm still trying to sort how who said what to whom when about the tunnel closure, but one of the issues raised is the safety of the tunnel. There is concern that the longstanding crack on the Ruston side of the structure has gotten wider and longer in recent months.

I understand that Ruston's engineering consultant will be inspecting the tunnel today to ensure the structure is still safe. That inspection will determine if the tunnel will stay open until mid-July, when construction of the new road and utilities will force the permanent closure until the new road opens in early 2012.