State Highway Network Postmiles Tenth

Postmiles are valid postmile points at 0.1 (1/10th) mile intervals, based on the Caltrans Linear Referencing System. Exceptions that are included are the beginning and ends of routes (and other situations) that don't necessarily begin or end on the even 0.1 mile interval. This geometry is based upon the extraction from TSN on 8 June 2025. . Route geometry updates based upon this extraction include routes 3, 36, 38, 49, 89, 139, 174, and 221. All updates received an update date of 6/8/2025 except for route 221 which received a date of 7/1/2025.里程桩点位（Postmile）是基于加州交通局（Caltrans）线性参考系统生成的、间隔为0.1（十分之一）英里的有效点位。本数据集涵盖的例外情况包括道路起止点及其他相关场景，此类点位未必恰好落在整0.1英里间隔处。该几何数据集源自2025年6月8日从TSN中提取的内容。基于此次提取完成更新的道路几何数据涉及3号、36号、38号、49号、89号、139号、174号及221号公路。除221号公路的更新日期为2025年7月1日外，其余所有更新的日期均为2025年6月8日。