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Fig. 4 Complex 3D cadastre occurrences in Coimbra (Portugal): GoogleEarth bird's eye view of
the pedestrian overpass (“Dom Pedro V” lift/funicular) over both public domain and municipal
Case study 2: “Pedro e Inês” Pedestrian Bridge
“Ponte Pedro e Inês” is a pedestrian bridge over the river Mondego connecting
both sides of the so-called “Parque Verde do Mondego” (Mondego green park) on
both riverbanks (Fig. 5 ).
Like in case study 1 above, the pedestrian bridge infrastructure constitutes itself
municipal domain. The interesting particularity of this case study is the fact that
the south bank bridge's foundations (left-hand side of the picture) are constructed
in “private domain”; in turn, on the north bank (right-hand side of the picture), the
infrastructure lies on municipal domain. Importantly, the private property above
was not object of expropriation; nevertheless, the simple existence of a public
infrastructure defines by law both: a buffer around it (which is indeed a 3D buffer
where private rights are limited), and also establishes state right of way running
across private land.
Case Study 3: Private Garages Versus Public Roof
A third situation is presented. This case study covers a 3D cadastral instance in
a residential neighbourhood where, very much induced by the local orography, a
couple of rows of private garages are located under public surface. As illustrated
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