A series of dubious refereeing decisions spoilt what was an evenly contested East Coast Derby.
Scarborough started well but Brid soon took control using the wind to keep the visitors pinned in their own half.
During the early exchanges Dearing scored two early penalties for the hosts, while Graeme Hogg replied for Scarborough.
Brid scored the first try through Girking but the referee, although well placed, missed what appeared to be a forward pass. Dealing was unable to convert.
On the stroke of half-time Tom Ratcliffe scored a superb try in the corner to reduce their deficit to 11-8 at the break.
Bridlington started the second half well and extended their lead with a try out wide. Scarborough applied the pressure but were thwarted by a number of strange decisions by young official Adam Robson.
Hogg added a penalty to reduce the arrears before Mr Robson came into his own. Downes received 10 minutes in the sin bin when everyone was expecting a Scarborough penalty.
Brid extended their lead with a penalty before the visitors were reduced to 13 men for an alleged high tackle by James Leach.
Brid went over from the resulting penalty and a superb conversion made it 26-11.
With the last play of the game fly-half Welsh scored a sensational solo try to make the final score 33-11 to hosts Brid.