[lowfighter]

For a test:

add to static.ini

[buildings.House$cbridgeshortmid]
Title cbridgeshortmid
MeshLive 3do/bridges/country/short/mid/mono1.sim
MeshDead 3do/bridges/country/short/mid/mono2.sim
AlignToLand 0
Body FuelSmall
Panzer 0.005

That's all, you'll have the middle of the country short bridge as object. Of course things can be changed as FuelSmall and Panzer, but anyway the bridge segment is there
Proceed the same way with other segments...