poland.030805

Poland Bridge Restoration Progress [WGN 45-08-02]. August 5, 2003 - The trusses have been leveled, the racking removed and the camber set to 18 inches, supported on the steel staging. An 18-inch downstream hook has been removed, straitening the bridge. The additional bracing installed in the end-panels during the stabilization phase has been removed.        The bridge has been moved 10 inches back upstream, restoring its position on the abutments to where it was before the June 15, 2002 high water. The bridge had been raised an additional three feet above the abutments to accommodate the installation of the supports used to set the camber. This additional cribbing has been removed and the bridge now sits at the height above the abutments set at the completion of the stabilization stage.        Further adjustment to the truss is required, as now most of kingpost braces appear to be too short to support the current configuration by as much as four inches. Note also, the lower ends of the bottom kick braces have broken loose from their fastenings on the tops of the bottom chords--the upper kick braces are dangling from the upper chords. Down-stream side with 18 inches of camber. Photo by Joe Nelson, August 5, 2003 Down-stream side. Detail, lower chord between 1st and 2nd panels. Photo by Joe Nelson, August 5, 2003 Down-stream side. Detail, lower chord at 2nd and 3rd panels. Photo by Joe Nelson, August 5, 2003 Down-stream side. Detail, upper chord between 2nd and 3rd panels. Photo by Joe Nelson, August 5, 2003

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