- AASHTO is a good resource and code for Highway Bridges. (Std or LRFD codes)
- AREMA is applicable for Rail Bridge structures (primarily based on AASHTO STR- AASHTO is a good resource and code for Highway Bridges. (Std or LRFD codes)
- AREMA is applicable for Rail Bridge structures (primarily based on AASHTO STD specifications)
Don't dismiss talking to some bearing manufacturers. Bearing manufacturers generally have their own in-house people who design bearings and could possibly help.
Pre-cast manufactures could be another avenue for you to get some leads or assistance.
I have some reference material from Glacier (W.G. Bearings Inc.) as well as one from Goodco Ltd.
A very good resource is "Design of Neoprene Bearing Pads" by Dupont. Sorry, I do not know where you can get this as I got a copy from a colleague / mentor of mine.
ANDY