Current ERL Issue - April 17, 2012 The October 18, 2011 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-09005 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