The Auger Creek Culvert will be a multi plate single arch structural plate arch made from 8 gauge Galvanized Steel, with a final assembled dimension of 36’ 0” feet long, with a 21’ 0” foot span, with a 6 foot, 11 inch rise (up to 1/2 foot variance in width and height measurement may be allowed to account for vendor differences in products). Culvert must fit into premade keyway in the premade footer. Culvert must meet HL-93 Loading requirements based on a minimum 24” roadbed surface. The Opal Creek Culvert will be a multi plate single arch structural plate arch made from 8 gauge Galvanized Steel, with a final assembled dimension of 40'-0" feet long with a 21'-0" span and a 6'-11" rise (up to 1/2 foot variance in width and height measurement may be allowed to account for vendor differences in products). Culvert must fit into premade in the premade footer. Culvert must meet HL-93 Loading requirements based on a minimum 24” road bed surface. Both footer designs shall assume a sub grade capacity of 4000lb/ft2 .
