MD iMAP: Maryland Road Centerlines - Interstates

This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. The centerline is a data sharing process between the State Highway...本数据集为马里兰州iMAP（MD iMAP）托管服务层。更多相关信息请访问http://imap.maryland.gov。该道路中心线数据是州级公路间的数据共享流程……