(click on thumbnail photos to enlarge in bottom window)
This photo is taken from the Contractor’s east temporary trestle/work platform and demonstrates the progress for the east half of the rehabilitated bridge’s demolition. The deck has been removed from the easterly portion of the bridge, and several spans have had the steel girders removed as well. The bridge spans are numbered from west to east, and spans 15, 16, and 17 in the foreground, and span 12 in the distance have had the girders removed. Cranes mounted on barges are used to remove the large steel elements.
This picture shows the progress of construction for the reconstructed east abutment wall. The existing wall element for the rehabilitated bridge’s abutment had to be removed and reconstructed due to cracking, while the existing footing remains in-service. In this photo, formwork can be seen for the northernmost portion of the abutment wall. This work includes the construction of a closure wall between the new and rehabilitated bridges’ abutment walls so that the embankment soil can be retained effectively between the two bridges.
This picture was taken near to the roadway elevation at the east end of the bridge. Here, the formwork used to support the wet concrete can be seen, along with the epoxy-coated reinforcement steel extensions that will be used to strengthen the next portion of the concrete pour. When the concrete hardens and its required strength is achieved, the forms are removed and the next pour will occur to complete the walls.
This photo is taken near the west end of the bridge looking eastward and demonstrates the progress of the on-going deck demolition. At this time, only three (3) of the 17 spans still require deck removal. After deck removal is complete, the structural steel removal can proceed uninhibited.