/diy/ - Do It Yourself

I've got a structure that I need to add a decking to.
The structure is 9x4.5m and the decking will span the front of the structure outwards 2.4m.
Originally, I was planning on using brackets to hold the joists in place, but:
>i may've fucked up sizing and the whole bracket will not fit against the bearer to get the right height for the decking
>i dislike brackets
Instead, would it be structurally sound to screw or bolt a 90x45mm along the whole of the bearers that the decking joists could rest on?
Pic related (and will follow up with other pics of structure for more context)