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Skywalk between Rosslyn Center and Metro elevator
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Pedestrian bridge over Wilson Blvd [02]
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Pedestrian bridge over Wilson Blvd [01]
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Wheelock fire alarm speaker/strobe in Ballston pedestrian bridge
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Red Line train on aerial structure
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Green Line at University Blvd.
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Harry Flood Byrd Bridge [01]
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Harry Flood Byrd Bridge [02]
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Bridge over US 30 in Breezewood
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Entrance to Freedom Park
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Delaware Memorial Bridge toll plaza
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Silver Line bridge pier
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Dan Ryan Expressway
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Chesapeake Bay Bridge from Sandy Point State Park
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Thomas J. Hatem Memorial Bridge
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Hell Gate Bridge
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Railroad tracks in Philadelphia
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Natural Bridge of Virginia [03]
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Natural Bridge of Virginia [04]
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Natural Bridge of Virginia [05]
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Natural Bridge of Virginia [06]
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Natural Bridge of Virginia [07]
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Natural Bridge of Virginia [08]
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Natural Bridge of Virginia [01]
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Natural Bridge of Virginia [02]
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The Awakening at National Harbor [05]
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Sandy Point State Park [58]
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Sandy Point State Park [16]
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Sandy Point State Park [19]
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Sandy Point State Park [29]
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Sandy Point State Park [47]
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Potomac River at Cumberland [01]
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Builder's plate on Harpers Ferry railroad bridge
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Interstate 94 westbound [01]
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Chicago River from DuSable Bridge, facing southwest
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Historic Route 66 sign
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Aqueduct Bridge stub [01]
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Key Bridge [01]
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Key Bridge [02]
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Two boys sitting on the Aqueduct Bridge stub [03]
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Key Bridge [04]
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Abandoned bridge pier at Harpers Ferry, at night [01]
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Abandoned bridge pier at Harpers Ferry, at night [02]
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Abandoned bridge pier at Harpers Ferry, at night [03]
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Abandoned bridge pier at Harpers Ferry, at night [04]
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Abandoned bridge pier at Harpers Ferry, at night [05]
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Abandoned bridge pier at Harpers Ferry, at night [06]
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Brighton Dam Road [01]
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Brighton Dam Road [02]
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Brighton Dam Road [03]
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Brighton Dam Road [04]
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Pedestrian bridge over railroad tracks [01]
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Pedestrian bridge over railroad tracks [02]
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Pedestrian bridge over railroad tracks [03]
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Pedestrian bridge over railroad tracks [04]
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Pedestrian bridge over railroad tracks [05]
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Pedestrian bridge over railroad tracks [06]
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Peace sign on a bridge pier
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Washington Metro bridge over Paint Branch Trail
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Green Line train crosses bridge over Paint Branch Trail
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Abandoned bridge piers at Harpers Ferry [01]
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Winchester and Potomac Railroad Bridge [01]
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Winchester and Potomac Railroad Bridge [02]
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Winchester and Potomac Railroad Bridge [03]
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Freight train on CSX Shenandoah Subdivision
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View from Maryland Heights overlook [01]
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View from Maryland Heights overlook [02]
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View from Maryland Heights overlook [03]
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Confluence of Potomac and Shenandoah Rivers
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View from Maryland Heights overlook [04]
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View from Maryland Heights overlook [05]
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Abandoned bridge piers and CSX Shenandoah Subdivision bridge
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Winchester and Potomac Railroad Bridge [04]
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Abandoned bridge piers at Harpers Ferry [02]
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Abandoned bridge piers at Harpers Ferry [03]
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Abandoned bridge piers at Harpers Ferry [04]
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Teddy Roosevelt Island bridge
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Roosevelt Bridge
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Key Bridge from Roosevelt Island footbridge
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Rosslyn skyline [01]