Nice Bridge. I think I have the same one. IIRC, it was included in many "Life-Like" sets back in the 80's and 90's which had many components from Eastern Europe. I'm fairly sure one came in my first train set from the late 80's I think the wood pattern on the edges may be the only reason I haven't used it yet. There's not much use for wood in my necromunda terrain.
Still, yours looks so nice it may be time to get mine converted and on the table!