A New Approach

The 45-year-old Forth Road Bridge, an 1,800-meter-long suspension bridge in the United Kingdom over the Firth of Forth, will soon undergo renovations to extend its useful life while a 3rd crossing of the estuary is constructed. Recent inspections revealed an unexpectedly extensive amount of corrosion and a large number of broken wires in the suspension system, with strength tests indicating that a loss of approximately 8-10% had already taken place. Projections indicated that if nothing were done to arrest the deterioration of the bridge cables, the structure could reach the end of its safe operating service life as early as 2014. A dehumidification repair strategy and modification of the bridge's expansion joints were selected for rehabilitation to prolong the life of the aging structure while the new crossing is constructed.


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  • Accession Number: 01154257
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 5 2010 12:48PM