Possible Clues:

• Bridge carrying a road over a river or valley
• Rail bridge over valley
• Bridge across a valley
• Road/rail bridge
• Span across a gorge, say
• High bridge
• Overpass by the Tube
• American four, returning, reportedly steered clear of bridge
• Short film without a rough cut shows way to get over depression
• Support for line I found in European capital mostly — about time