Illustrated description of this large steel bridge, the upper deck of which carries four lines of rails and the lower is arranged for vehicular and foot traffic. (3000 w.) (No. 86209 D)
The double-deck swing bridge at the upper harbor at Hamburg
Pont Tournant a deux Etages sur le Port Superieur de Hambourg
1907
Article (Journal)
French
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An English double-deck swing bridge for railway and roadway traffic
Engineering Index Backfile | 1909
Upper deck of Henry Hudson bridge
Engineering Index Backfile | 1938
Upper deck of Henry Hudson bridge
Engineering Index Backfile | 1938