Crews have been hard at work on the new multi-use path viaduct on the south bank of the Willamette River. The public can now see the latest components rising from the ground: precast and cast in place hammerheads (crossbeams) that will support the path.
Workers constructed these supports by drilling column shafts, placing rebar cages topped with anchor bolt clusters inside each, and then placing concrete. The top-shaft concrete cure for a week before the precast hammerheads are secured to each column with the tightened anchor bolt assemblies.
Two precast hammerheads are installed on the shaft columns, while one shaft on the right awaits anchor bolt clusters.
Workers carefully place a hammerhead atop a shaft.
Crews will soon start building a block retaining wall on the east end of the path to keep the embankment contained.
Next month, they will place box beams, salvaged from the temporary I-5 bridge, that will rest on the hammerheads and act as a base for two inches of asphalt paving to create the final pathway.
Motorists will see increased activity along the north side of Franklin Boulevard just east of the Whilamut Passage Bridge as the box beams are delivered. Trucks will enter and exit the work zone, allowing cranes to offload and install the heavy beams. Please pay close attention to flaggers and expect brief traffic delays.
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