BNSF put in place a substantial track curfew at Sand Creek so the diamond could be replaced. It was indeed replaced earlier in the day, and crews are now working to place fresh ballast to complete the work. The curfew actually necessitated the morning Zephyr being delayed by four hours, so it departed Chicago the day before four hours late, running at #1005 (instead of #5), with the entire schedule being delayed by four hours.
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