Possible Clues:

• Supporting structure
• Bridge support
• Only men go in at such a meeting
• Met Bantu (anag.)
• Structure supporting an arch
• An although that sounds as if it comes at the end of the bridge
• Although men are inat it at the end of the bridge
• Structure on which each side of an arch ends
• Although the people get in at the end of the bridge
• Meeting workers in a strike