This reminds me of what happened in Sydney, Australia. Sydney has this freeway (the M4, formerly the F4) which starts in the foothills of the Blue Mountains, the western edge of the Sydney metro area, around 55 km west of the city centre. And it heads due east, towards the centre of the city. And they built the western portions of the freeway first, since the land acquisition costs were cheap. By the late 1970s, it finished 15 km short of the city centre. And the government had acquired the land to continue it to the edge of the city centre, another 13 km or so. But a lot of local residents didn't want the freeway built. So in 1977, the recently elected centre-left Neville Wran government decided not just to cancel its construction, but also sell the land reservation to property developers to ensure it never could be built.
Did that actually stop its construction? No. The state government ended up building the eastern section anyway, starting in 2019, and it opened in 2023. But the surface reservation had been lost, and reacquiring it through eminent domain would have been prohibitively expensive due to high property prices, and politically too controversial too, so it had to go through a tunnel. A surface freeway would have cost AU$1–3 billion, with underground tunnelling the cost was well over AU$15 billion (around US$10 billion)
Wran's 1977 decision to sell the freeway land reservation was arguably one of the most expensive decisions ever made in Australian history. In the long-run it had made life worse for local residents, as the freeway dumped commuter traffic 15 km short of its primary destination, and they had to put up with that traffic traversing their local roads–which made the eventual completion of the freeway almost inevitable
Did that actually stop its construction? No. The state government ended up building the eastern section anyway, starting in 2019, and it opened in 2023. But the surface reservation had been lost, and reacquiring it through eminent domain would have been prohibitively expensive due to high property prices, and politically too controversial too, so it had to go through a tunnel. A surface freeway would have cost AU$1–3 billion, with underground tunnelling the cost was well over AU$15 billion (around US$10 billion)
Wran's 1977 decision to sell the freeway land reservation was arguably one of the most expensive decisions ever made in Australian history. In the long-run it had made life worse for local residents, as the freeway dumped commuter traffic 15 km short of its primary destination, and they had to put up with that traffic traversing their local roads–which made the eventual completion of the freeway almost inevitable