I also use an old book from AISC called Moments Shears and Reactions for Continuous Highway Bridges, March 1966. It has tables for different multi-span continuous bridges with HS20-44 loading. HS25 is HS20 x 1.25, I believe. The book may be available from AISC.
bridget13, try this link. The beam design program may be there. If not, send me an e-mail and I will send you the files I downloaded. I'm still using an older version of MathCAD so I can't open the newer free downloads.
Is Simple Span Moment and Shear Envelopes for HS Loading the topic where you found the mathcad sheet? It looks you need to buy it from PTC, is that so?
MathCASD was bought by PTC. Now things just aren't the same. Do you have MathCAD? If so, what version? You can buy whatever current MathCAD file you need or you can go to the ET PTC: MathCAD Forum and see if anyone will share a needed file with you. OR, you can e-mail me as I previously suggested. I have MathCAD version 13. If you have 13 or earlier, I can help you.
