· Span statuses come from parsing @Ejipuraflyover tweets — spans never explicitly mentioned stay gray even if built.
· P33–P47 has zero tweets (completed early); it only colors via the Aug 2025 P28–P62 baseline.
· Girder position is "last reported", so it jumps between work fronts. Tweets reference two girders; one is modeled.
· Landmark buildings sit at real Google Maps coordinates but are stylized massing, not exact architecture.
· Pier positions are GPS-calibrated from 7 photo anchors; spacing 18–41 m is real.
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