Bridge structure
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United States of America Patent
Stats
-
Oct 28, 1997
Grant Date -
N/A
app pub date -
Dec 15, 1995
filing date -
May 1, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A bridge including a metal tubular space frame enclosed in a housing shell made principally from fibre reinforced plastics material which is maintenance free and protects the frame from corrosion. The upper surface of the housing shell forms a vehicular platform. The lower surface of the housing shell is of a curved aerodynamic shape and forms a load bearing access and maintenance platform. The space frame may include pre-stressing cables running alongside or inside elongate members of the space frame.
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