Here's a couple links to the Lionel Service Documents for the Bascule Bridge.
You'll have to type in the links.
http://www.lionel.com/media/servicedocuments/71-2948-251.pdf
http://www.lionel.com/media/servicedocuments/71-2948-250.pdf
As to the restoration, hopefully someone will chime in with their experiences.
Railroad Crossings: Thinning the gene pool daily!
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