Most of what Kedron's two largest corridors do here, they do underground: 503.3 of the busway's 656.3 metres of centreline, and 1,773.4 of the Airport Link's 2,416.1 metres, are recorded as tunnel. Where either has a position at ground level, it is at the places it comes up — a 152.9-metre busway surface section, and 642.8 metres of Airport Link ramps and mainline. Those are locations rather than frontages: 9 lot parcels lie within 50 metres of the busway's surface section and 114 within 100, all 9 and 41 of them standard-format, across 25 survey plans. An address above a tunnel therefore has a distance-and-direction question about a place.
At ground level the picture changes, and at scale. Gympie Road has 237 lot parcels within 50 metres and 889 within 100 — on standard-format lots only, 147 and 332, across 193 survey plans. The East-West Arterial Road returns 240 and 481, or 41 and 122 standard-format, across 106 plans. The road authority's published code of practice has a barrier working best tight to one end of the path — against the source, or against the person hearing it — and working at all where the screen puts itself fully across the line of sight between the two. A source at ground level a few metres across the kerb is that case.
Where a barrier already stands inside one of these corridors, it is neither a fence nor a neighbour's. The Transport Infrastructure Act 1994 lists noise barriers, tunnels and cuttings among the things that make up busway transport infrastructure: the barrier is a component of the busway, held by the state. That Act also requires a busway to be run by an accredited manager, its own class of infrastructure administered as such rather than as a road. None of it is a structure a private owner can commission, and this page claims no part in it.
There are fewer doors than directions. The Environmental Protection Act 1994 puts busway noise outside the environmental nuisance provisions, grouped with light rail and rail rather than with roads. The state's noise fact sheet still sends a state busway and a state-controlled road to one body, the Department of Transport and Main Roads — and that covers the busway, the arterials and the four bridge segments recorded above them. Only the toll tunnel starts elsewhere: a Brisbane toll road goes to a private company first, and to the department if it stays unresolved. Council keeps the ordinary things: a condenser, a pump, building work, power tools, a commercial premises running outside its approval conditions.
> The Northern Busway, the Airport Link tunnel, Gympie Road and the East-West Arterial Road appear above for one reason: state and council datasets record them inside this locality. RYNO has neither built, tendered for nor been engaged on a single one of them.