Noel and Russ,
I had a little extra time on my hands. An excerpt from the 1900 - 1902 Report of the Vermont Railroad Commissioners may help clear up some of the questions that have bubbled up in this discussion. The report considers in part the joint petition of the Central Vermont and Rutland-Canadian Railroads to cross each other at grade at the easterly end of the Rouses Point - Alburgh bridge:
"... it is necessary for the branch of the Rutland-Canadian Railroad extending northerly to the Canadian boundary to cross at grade ... the Central Vermont Railway ...
... it is necessary for [the] northwesterly leg of [the] "Y," to cross ... the Central Vermont Railway ... west of Alburgh station.
...the railroad bridge across Lake Champlain, by which the roads of the petitioners reach New York State, is owned in common by said two companies; that the tracks ... are gauntleted and that for the purpose of so using said bridge ... it is necessary for the branch of the Rutland-Canadian Railroad, extending to the New York line, and said Central Vermont Railroad to be brought together at grade, near the easterly end of said bridge and for the two inside rails of the respective railroads to cross at grade by means of a frog. Whereby your petitioners pray ... said grade crossings may be granted ... " etc.
It appears, therefore that (1) the bridge/trestle was co-owned, and (2) the gauntlet track ended close to the Vermont end of the bridge.
Further,
>>It seems clear that the CV line must have been on the north side of the gauntlet track on the west end.
You are correct, according to the photo and caption on page 99 of Shaughnessy's book.
PBM