The ABC has a fascinating story of the Noel Butlin Archives at ANU which is built into the space we know of as the Parkes Way tunnel:
More than 30 years ago a hidden bunker was constructed above the Parkes Way tunnel on the Australian National University (ANU) campus.
ANU archivist Maggie Shapley says the two-storey structure [...]
There is quite a bit of planning that goes in to lighting a road tunnel, you see the aim is to ensure that drivers approaching the tunnel have sufficient visibility so as to avoid potential obstacles both on the entrance and exit of the tunnel.
During the daytime this requires quite a bit of [...]
Proposed by-pass tunnel of Tharwa to provide replacements for the existing Tharwa Bridge while at the same time providing a new access path for damaged Smiths Road bridge (over the Gundgenby River)
A two lane tunnel with access on Tharwa Drive,Tidbinbilla Road, Naas Road and Smiths Road. Each of these entrances will be monitored by automatic [...]