That's not Google. Just some very long ago French courses.
Yeah, gold is or and argent is money but how fluid those two are in actual usage, I don't know.
Ah, I got it - I thought that you were getting different results out of Google Translate.
Of course, "pont d'argent" and "silver bridge" (in this case) are both translations from the Japanese 銀の橋 - which is a play on the Floating Bridge....