[8bitben]

I have a hard time believing this will hold up in court. Surely they take some measure of federal money to keep up those roads - blocking access to other taxpayers just because they reside outside your city is clearly unequal treatment.

The problem here seems more like the infrastructure that is being diverted around, rather than the alternate routes themselves...

[junkscience2017]

Los Gatos has closed a highway onramp now for two consecutive summers and it is perfectly legal

In California, you only need approval of Caltrans. In other states it is likely similar.

Many people think there is a "taxpayer" angle...there isn't. The governing body of the roads typically has blanket authority to close roads without public consent

In the end, Towns will reconfigure themselves to be giant cul de sacs.

[hkmurakami]

Palo alto residential areas have tons of roadblocks. Honestly smart choice by the residents.