Just so everyone is clear......there is no such thing in S3D as a support bridge!! There are supports...which are designed to be removed.....and there is a feature called "bridging", where the first layer printed that is not supported by the print bed can have its own set of rules to help prevent sagging...in other words the extruded plastic bridges between two points.
If anyone is suffering from an issue that they simply describe as "I have the same as..."....then its very difficult for anyone to honestly provide any useful help. Please describe your issue, what started it, what you have tried....and as previously suggested....attach a factory file so the expert users on here can look to see what may be wrong...and provide any worthwhile suggestions.
A factory file, btw, can be created from the File dropdown menu. Load your model and settings, then save as a Factory file...and attach the file to a post.