Further work from 1983 to 1989 added brackets on the west of the viaduct for electrification masts .
Further work from 1983 to 1989 strengthening for 105 ton EF Class electrics , with 18 tonne axle loads and higher tractive forces .
Further work from 1983 to 1989 added brackets on the west of the viaduct for electrification masts and strengthening for 105 ton EF Class electrics , with 18 tonne axle loads and higher tractive forces .