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Is there a detail for base plating MGS (wood or steel posts) to concrete
pavement or a concrete deck? I recall seeing a detail for bolting MGS to the
edge of a bridge deck, but don’t recall seeing one for base plating to top of
concrete.

Thanks,

We did develop a couple of systems that may work for this application. The MGS bridge rail system used S3x5.7 posts attached to the edge of the bridge deck. We have also adapted this design for attachment to culverts. There may be potential to mount this type of system to the top of the bridge deck with base plates, however, that technology has not been developed at this time. I have attached a link to the report below.

http://mwrsf.unl.edu/reportresult.php?reportId=53&search-textbox=bridge%20rail

The closet design that we have developed to what you are requesting was a system for attachment of strong post W-beam to the top of low-fill culverts. That system was designed and tested with the G4(1S) system, but would likely work for the MGS as well. The system was designed for use with the posts mounted 0-9” below grade and directly to a concrete culvert. It used ½ post spacing. I have attached a link to the report below. For the MGS we would recommend the same base plate and anchorage design with slightly longer posts. We believe that the ½ post spacing would need to be retained as well. Further research could be done to investigate/develop more options with the MGS and this attachment design.

http://mwrsf.unl.edu/reportresult.php?reportId=144&search-textbox=culvert

We do not have any wood post version of these systems. Take a look at the above systems and see if they meet your needs. We can provide further guidance if you need it.