Old Bukit Timah railway bridge https://t.co/q7jYjdEP3V
Bukit Timah Truss Bridge (Historic Railway Bridge)
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HOLLAND ROAD
['old', 'bukit', 'timah', 'railway', 'bridge', 'https://t.co/q7jyjdep3v']
[]
railway bridge
old bukit timah railway bridge
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance report feedback."},
    ]

It seems that the Twitter post "old bukit timah railway bridge" does not relate to a maintenance report feedback to public flat house. The post does not mention any specific issue or facility related to public housing, and therefore it does not fit into any of the categories I provided.