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Looking NE from scenic overview area downstream from the bridge. Pier 3 is in the center of the photo. |
| Looking NE at Piers 2, 3 & 4. |
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Looking down at concrete pump truck and workpad area during Pier 4 capbeam placement. |
| Looking east at launching nose installation. |
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Tail girders showing spreader beams between pairs of girders (note field welded tail notch extension). |
| Brief history of the name "Steamboat Rock" from sign in the park just south of town. |
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Jacking beam in final configuration prior to test drive of first launch. |
| Aerial photo looking NW showing project site and the river upstream. |
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Aerial photo looking northeast. |
| Girder position after initial "test drive" on Saturday, August 11. |
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Walkway used for handling post-tensioning bars during launch. |
| Looking west toward launching nose (girders are advanced approximately 120 feet from Pier 6). |
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Looking west along bottom flange of Girder E (girders advanced approximately 120 feet from Pier 6). |
| Looking NE toward girders approximately 20 feet prior to nose touchdown on Pier 5. |
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Looking west toward Pier 5 just prior to launching nose touchdown (note: Girder F will touch down first). |
| Looking west along bottom flange just prior to touchdown (note deflection of girder system). |
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Launching nose after touchdown on Pier 5. |
| Looking west along Girder E web (note the distorted appearance between stiffeners). |
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Launching nose (section 2) being maneuvered around Pier 6 prior to installation. |
| Launching nose (section 1) delivery into launching pit. |
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Placement of Pier 4 capbeam concrete (final substructure placement) with Piers 1, 2 and 3 in the background. |
| Looking down at field drilling of launching nose web splice. |
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Post-tensioning bars along north side of girders. |
| Post-tensioning bars passing through jacking beam. |
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Aerial photo looking SW showing Piers 1-5 and tip of the launching nose. |
| Aerial photo looking northwest. |
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Field drilling bottom flange splice connecting launching nose to ends of Girder F. |
| Installation of strain gauges by researchers from Iowa State University on Sunday, August 12. |
