Bastens - We are lucky enough to have one of the LEGO City Train Track Splitter 7996 which is now retired. That being said I wouldn't recommend spending over $250 to buy
LEGO City Train Rail Crossing (7996) : Amazon.sg: Toys
4DBrix - Train
LEGO City Train Rail Crossing 7996
Uphill Track 7996 City Rail for Lego Kit Train Building Blocks Sets DIY