What has been done for garage door track mounting around the edges when all you have is a single 2X12 treated lumber buck there?  It is not thick enough for the track brackets to get on.  At the very least you would need to have two pieces of lumber there and that would be minimal....

Also, what about the torsion spring mounting overhead if you have an ICF (concrete) lintel?

I put 3 2x8s on each side of the garage door to gain the necessary distance. If you didn't make the RO large enough for that, you'll have to set your garage door to the inside of the buck and cut some foam and embed a 2x into the foam with anchors for a screwing surface. Same for the torsion spring mount.

Cut out the foam on the side of the door back 3.5" from the wood buck. Place a treated 2x4 against the concrete and attach to concrete with 1/4" x 2-3/4" TAPCONs and some construction adhesive for good measure. Attach another 2x4 over the top of the treated 2x4 (can be either treated or not) and screw it to the treated 2x4 with 3" coarse thread deck screws. Assuming you have 2.5" thick ICF foam and 1/2" drywall on the inside, this will bring the mounting surface for the garage door hardware flush with the interior finish. If you want a more finished appearance, cover the edge of the 2x12 buck and 2x4 side supports with a 1x6 and paint to match your trim.

For the torsion spring mount overhead, do essentially the same thing except use short pieces of 2x6 extending vertically from the wood buck.

I was hoping for a solution that didn't involve work.

Thanks for the comments. I did end up using some treated 4X4 that I ripped down to 2-1/4 which was the thickness of the foam. After that, Tapcons and a nice aggressive screw through the sides of the buck for good measure. So, is the best solution to just put triple thick bucks on the side of the garage before the pour, or make the doors oversize and add them later? I lost a full day on my screwup.

I made my ICF basement garage door opening wider than necessary by ~6" so that I could come back and put three (3) 2x on each side of the opening to attach the door hardware. I still have to set the 2x6s at the top for the spring mount and the upper rail attachment brackets.

Why didn't the ICF installer/contractor address this issue prior to the pour/install?

Why didn't the ICF installer/contractor address this issue prior to the pour/install?

Well, that's the question that kept running through my head as I was cutting and setting 14 mounting pads yesterday.