0

0.5

between 0.5 and 1.0

1

deck type

through type

half through type

double deck type

1.23 m above the rail level

1.50 m above the rail level

1.83 m above the rail level

2.13 m above the rail level

only (i)

only (ii)

both (i) and (ii)

none of the above

transfer load from top of end posts to bearings

keep the rectangular shape of the bridge cross-section

stiffen the structure laterally

prevent the sidesway buckling of top chord