A fork lift carries a column into place for pre-assembly of the south column pair.
(February 4, 2015)

A cross member is bolted at the top of a column.

Cross member in place.

Complete X frame at the top of the column pair.

A huge crane picks up the south end column pair to carry it to the bridge.

Nearly vertical.  The outward splaying at the top is part of the design, not an optical illusion (see the drawing in Part 1).

At this point, the columns are not connected to the X frame at its bottom,
so the columns can spread around the bridge during assembly.

The spreading is even more apparent in this photo.

A bit of the roof had to be removed as the columns were lowered onto the south piers.

Workman now has access to the bottom beam of the X frame.

Mating the columns to their piers.

Continuing the alignment process.

A portable come-along was used to pull the column into position, where it was bolted to its pier.
(February 4, 2015)

Tie rods were then connected to their anchors the next day.

...from the tops of the columns.

Zoomed view from the modern bridge upstream.
The cables going from these south columns to the north columns were used only during the assembly process.

Similar procedures were used to install rod anchors and columns at the north end of the bridge.

Final connections between the columns, via the intermediate bridge support beams, were done with high-strength threaded rods,
just as for the connections of the column tops to their shoreside anchors.  The net vertical force that can be applied to each intermediate
cross beam by the tie rods is about 150,000 lb within the 150-ksi strength of the rods.  Actual loads will be much less.
(February 21, 2015)

Another view of connections to the north intermediate cross beam.

Columns and tie rods along the east side of the bridge.