Specifications include, but are not limited to: THE PURPOSE OF THIS PROJECT IS TO WIDEN 5.402 MILES OF I-30 TO SIX LANES, RECONSTRUCT THREE INTERCHANGES, AND REPLACE FIVE BRIDGE STRUCTURES IN SALINE COUNTY. THIS PROJECT CONSISTS OF CLEARING AND GRUBBING, REMOVAL AND DISPOSAL ITEMS, EARTHWORK, TRENCHING AND SHOULDER PREPARATION, AGGREGATE BASE COURSE, ACHM BASE, BINDER, AND SURFACE COURSES, PORTLAND CEMENT CONCRETE PAVEMENT, MINOR DRAINAGE STRUCTURES, FOUR COMPOSITE PLATE GIRDER SPAN UNIT BRIDGES (TOTAL SPAN LENGTH 567.22'), SIX CONTINUOUS COMPOSITE W-BEAM UNIT BRIDGES (TOTAL SPAN LENGTH 1846.21'), TWO DBL. R.C. BOX CULVERTS (TOTAL SPAN LENGTH 41.59'), TWO TRI. R.C. BOX CULVERTS (TOTAL SPAN LENGTH 75.03'), CONCRETE MEDIAN BARRIER, EROSION CONTROL ITEMS, SIGNAL ITEMS, STEEL OVERHEAD SIGN STRUCTURES, PAVEMENT MARKING, AND MISC. ITEMS.