Tubular bridge
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A tubular bridge is a bridge built as a rigid box-girder section within which the traffic is carried. Famous examples include the original Britannia Bridge over the Menai Strait, the Conwy railway bri
Conwy Railway Bridge
Conwy Bridge.Construction of second tube, September, 1848
Section of the original wrought-iron tubular Britannia Bridge standing in front of the modern bridge
Original Britannia Bridge
Box girder bridge
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A box girder bridge, or box section bridge, is a bridge in which the main beams comprise girders in the shape of a hollow box. The box girder normally comprises prestressed concrete, structural steel,
Tubular bridge
…Torksey used tubes that were only 10 feet (3.0 m) high and placed the railway deck between them, rather than inside. This is now considered as the first box-girder bridge, rather than a pure tubular bridge. Despite this, it was initially rejected after completion by the Board of Trade’s inspector, Captain Lintorn Simmons…
Underneath the No. 2 Road Bridge in Richmond, British Columbia, Canada
Erskine Bridge, near Glasgow, Scotland
Single box girder bridge (concrete), Australia. A similar bridge on this river was fabricated ashore and pushed across its pylons.
Single box girder bridge (steel), flyover above eastern approach of the San Francisco–Oakland Bay Bridge