skos:altLabel | - first bridge
- Baltimore & Ohio Railroad
- Baltimore & Ohio Railroad's bridge
- Baltimore & Ohio Railroad, Bollman Bridge
- Bollman Truss Bridge (abutments)
- Harpers Ferry Crossing
- Harpers Ferry bridge
- Old B&O Mainline Bridge
- Shenandoah Sub Bridge
- crossing the Potomac River
- historic railroad bridge
- its new Potomac River Bridge
- two railroad bridges
- Baltimore & Ohio Railroad, Harpers Ferry Bridge Piers
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