The reason I originally asked...
We just finished a LD from west to east and back. I saw a lot of new surface next to our tracks be prepared for new track. I heard that the host RR gets extra $ when the Amtrak arrives early or on time. I got to wondering if the host RR bean counters saw this as enough of an incentive to move them closer to investing in new track to keep the Amtrak NOT off to the side.
But again, you'ld have to look at how many feet of track each on time allowance would buy...
New track is somewhere above One million per mile, not counting grading, drainage, moving existing utilities, bridges, etc. Say somewhere around $5 million in relatively easy to build terrain and no right of way costs. That is $1,000 per foot. (I may even be low.) It would take a heap of on-time payments to get much at that rate.
I am guessing that you are talking about the Sunset Limited west of El Paso. It had virtually congealed by the time UP decided to spend the big bucks to double track it. That work is now somewhere above 50% complete, but I understand that it has been paused due to the downturn in freight traffic. Same downturn having a lot to do with the vastly improved on-time performance that is happening generally.
How much the host RR prioritizes Amtrak has more to do with corporate attitude than to any effect positive or negative that Amtrak payments have on the bottom line. There ma be some exception in multi-train corridors, particularly such locations as North Carolina, Oakland to Sacramento, and the Central Valley of California where the state has committed to track imporvements to improve train speed and reliability.