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Tunnel that sank won't hurt Silver Line, officials say

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A tunnel in Tysons Corner that will hold the new Silver Line has sunk into the ground about an inch but is still big enough for trains to pass through and won't hurt the project, a new inspection shows. Engineers say the floor of the tunnel has "settled" into the ground by about an inch at its worst part, but there's still enough clearance overhead for Metro trains to use the tunnel, said...

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