As was stated earlier and repeatedly, new 115 lb. CWR rail is more than ample for the projected passenger train volume (commuter trains don't weigh much) and freight tonnage (which will be moderate, at best) on the SMART / NWP mainline. It is indeed cheaper than 136 lb. CWR; the difference in price could provide additional funds which can be better used elsewhere on this project. Personally, I feel that anyone concerned about the freight operations should be more concerned with the ability of all bridge structures to handle 286K or heavier loads safely, rather than being concerned with a mainline rail poundage of 136 lb. versus 115 lb. Besides, SMART is wisely replacing ties and installing new ballast in conjunction with this rail replacement project, so, assuming ample funds remain in place to maintain the track structure properly in perpetuity, I would suspect that this 115 lb. CWR will serve faithfully for many years to come. And I should also point out that countless miles of mainline railroad in the U.S. still possess jointed and continuously welded 115 lb. rail and operations there are not hindered as a result.

Chris Goepel