Mr Ambler added his firm was investigating a "fast-track replacement" for Normandie 1 along its current route.

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Track replacement and signal modernization would be accelerated.

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But the connection from Hoboken down to the World Trade Center tunnels is still severed, as the railroad awaits delivery of a replacement track switch.

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In addition, depreciation deductions track historical cost rather than rapidly rising replacement costs, adding to short-term profit during inflationary times.

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But the project's current phase also includes replacement of five two-track bridges, which required reducing the number of active tracks from four to two.

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In track inspections in the months that followed, employees said the replacement rail should be welded into place, not bolted, he said.

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The company is hoping that thinner glass and shorter replacement cycles will help drive the prices higher and bring its profitability back on track.

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About 150 replacement buses a day have replaced those services and an amended timetable will run until the track is repaired.

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