[SD90WLMT]

May I suggest a typical wood stringer...much like on a trestle...even laminated 2-3 plys for each rail..
Bolt these to your steel cross parts....glue n pin ties to these stringers.

Then hand spike your rail in place...

Dirk

 

[SD90WLMT]

Yer right Pete.. bridge ties are not track ties..
Track ties are usually 8-9' long..
Bridge ties tend to be 16' long.. the 8"x12" ties sit on edge..and are spaced 12" on center..which leaves a 4" space between ties...

But this style for use on bridges is also period and local sensitive..

For older designs, more what we thick of as a western time period, back woods mining n logging lines made up their own practice as fit the area and needs....

We'll assume Jim understands his RR's needs for general design...using what fits his needs..

Dirk

 

[SD90WLMT]

Dual tracks....

..complete with a sentry!! How cool..

D