Questione giuridica chiave
Whether the late publication of the contribution plan barred the levy of road contributions under Solothurn law.
Decisione estratta
The rule requiring the contribution plan to be established before construction was a material procedural limitation, and ignoring it without sound reasons was arbitrary.
Motivazione estratta
The statutory text clearly required prior publication; the purpose was legal certainty and timely objection by landowners. The cantonal court wrongly treated the rule as a mere order provision and replaced it with a ten-year limitation period.