West Coast Branch to end of 1% grade, 40m. × 1%
End of 1% grade to tunnel, 35m. × 2%
Tunnel section, 3,500 ft.
Tunnel to foot of 2% grade, 20m. -2%
Foot of 2% grade to Wenatchie 52m. -1% (or less.)
The introduction of 1 per cent. grades, though higher than the water
grades of the Wenatchie and Skykomish rivers, is justified as balanced
against the 2 per cent. mountain grades and the saving effected thereby
in the bench country, which prevails along both rivers mentioned.
While tunnel is being driven, a 4 per cent. cross-over through Cady's
Pass can be cheaply put in if necessary.