Replica American 1854 wrought iron strap rail
This is mainline track for locomotive haulage, hence the widely-spaced ties:
How the rail was fixed - a method leading to tragedy on the mainline once the spike heads wore through:

Historical wooden railed Bush Trams Down Under
Most (but not all) of these are for draught animal haulage, hence the large number of cheap rough sleepers laid close to make a walkway for their iron-shod hooves:








Sawmill track for man-haulage
with a smooth walkway for hob-nailed boots:

Strap-rail 2-rail Model Track by Veronika Today
Living in America, Veronika has represented old mainline track not old Bush Tram track - but see the last picture:



Today's uncapped wooden track after four years out of doors:

Recent short track Down Under
Because this late 20C track is for a small Bush Tractor rather than horses, it doesn't need close sleepers:

Plenty more stuff online - for instance google <Strap Iron Rail> and click Images.
David 1/2d



