Bowen Place Conundrum

The Cycle path (shared Path) around Lake Burley Griffin has been decribed as Australia best half day ride by Canberra's cycle lobby group Pedal Power. It has taken quite some time to finish all the missing links as there as two agencies responsible for different sections, the National Capital Authority and the ACT Government.
One section that is the National Capital Authority responsibility is Bowen Place in the Parliamentary Triangle and is a dangerous crossing of a four lane road

                             
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There are three options proposed by the NCA after consultation with  a working group which are.....

Footbridge

Ramp and stairs with traffic signals

Traffic signals only

The Bridge option is the most logical as it will not impede car traffic or pedestrian/cycle access to the Kings Ave bridge. Though as nothing is easy in the ACT , the National Trust and the Walter Burley Griffin Society raised heritage concerns about a footbridge as it would have a negative visual impact on 'Parliament House vista and views across and to the lake, and adverse impacts on the design geometry of the parliamentary vista and Kings Avenue Bridge'.
To view this negative impact you would have to take a helicopter view of the site or from the top of Mount Ainslie which is quite ridiculous. Ped / Cycle Bridges can have a sculptural affect and are used in many cities around the world.

Borneo Sporenberg, Amsterdam

Copenhagen, Denmark

Another option which was looked at early but not considered in the final three options was an underpass which would also be the most expensive. This doesn't seem to worry the dutch as infrastructure spending for cyclists and pedestrian has no known boundaries it would seem, is that why there are one of the healthiest and happiest nations?