 The Cogan Viaduct ( Welsh : Traphont Cogan ) is the most important element of the Cogan Spur as it crosses the River Ely with a central span of 95 metres ( 312 ft ) . In total it has 6 spans ; 40 m ( 130 ft ) , 60 m ( 200 ft ) , 60 m , 60m , 95 m and 60 m . It is made from a multi @-@ span glued segmental structure of rectangular box sections . In all over 300 sections were used to construct the viaduct , each weighing from 43 to 117 tonnes . The Cogan Viaduct was again designed by South Glamorgan County Council , who won a Concrete Society Commendation in 1989 for the design . 
 The Cogan Viaduct ( Welsh : Traphont Cogan ) <a href='drop_aux' title='1'><mark>is</mark></a>the most important element of the Cogan Spur as it <a href='uninflect' title='2'><mark>crosses</mark></a> the River Ely with a central span of 95 metres ( 312 ft ) . In total it <a href='got' title='3'><mark>has</mark></a> 6 spans ; 40 m ( 130 ft ) , 60 m ( 200 ft ) , 60 m , 60m , 95 m and 60 m . It is made from a multi @-@ span glued segmental structure of rectangular box sections . In all over 300 sections <a href='uninflect' title='4'><mark>were</mark></a> used to construct the viaduct , each weighing from 43 to 117 tonnes . The Cogan Viaduct was again designed by South Glamorgan County Council , <a href='null_relcl' title='5'><mark>who</mark></a>won a Concrete Society Commendation in 1989 for the design . 
Da Cogan Viaduct ( Welsh : Traphont Cogan ) the most important element of the Cogan Spur as it cross the River Ely w/ a central span of 95 metres ( 312 ft ) . In total it got 6 spans ; 40 m ( 130 ft ) , 60 m ( 200 ft ) , 60 m , 60m , 95 m and 60 m . It is made from a multi @-@ span glued segmental structure of rectangular box sections . In all over 300 sections was used to construct the viaduct , each weighing from 43 to 117 tonnes . TdaCogan Viaduct was again designed by South Glamorgan County Council , won a Concrete Society Commendation in 1989 for the design .