I discovered a shortcut, by foot, down to the Hebrew University.
But then I was so excited to be standing on a bridge looking down at Begin Expressway for the first time that I forgot to photograph the bridge itself.
Sorry bloggers at Sunday Bridges, you'll just have to imagine it.
The photo did, however, catch the early-morning shadows of the median trees for Shadow Shot Sunday.
Named for the late Menachem Begin, the north-south urban freeway in western Jerusalem is all of 12.2 km or 7.6 miles long.
Many of its sections have these tall acoustic walls.
IMPORTANT UPDATE! I finally found info on the acoustic walls that everyone is asking about!
Gash engineers designed a three-span bridge and acoustic walls with unique architectural cross-sections.
From the Gash bridge engineering website:
.Acoustic barrier semi-roofing shape
The height of the wall and its shape was determined by taking under consideration an acoustic defense line at the edge of the traffic lanes instead of at the margins of the road as usual. As a result the wall's height was lowered from 12-13 meters to 8.5 meters.
Its arch shape was developed in order to reflect the noise sound back to the road.
The structure consists of modules of projecting beams covered with arch-shaped membranes made of 8 cm concrete. The beams also support prefabricated plated serves as a retaining wall for the back landscape's filling.
The website has close-ups and blueprints in detail.