Current ERL Issue - April 16, 2013 The October 16, 2012 ERL has moved to "Archive." Browse ERL library The printed version governs if there is a discrepancy between the electronic and printed versions. Standard Specifications with GS-12002 Supplemental Specifications Materials I.M.s Standard Road Plans Standard Culvert Plans Standard Bridge Plans Sign Truss Standards Construction Manual Flagger's Handbook SUDAS Standard Specifications Search ERL Library Select items to be searched: All Standard Specifcations Supplemental Specifications Materials I.M.s Standard Road Plans Standard Culvert Plans Standard Bridge Plans Sign Truss Standards Construction Manual Flagger's Handbook SUDAS Standard Specifications