Specifications include, but are not limited to: The purpose of this invitation is for a one-time purchase of a complete concrete box culvert, 20’ W (span) x 10’ H (rise) x 72’ long, including joint seals, precast wingwalls, and precast headwalls for District 5. Complete precast concrete wingwalls/headwalls and foreslope walls as shown in the attached plans, in lieu of cast-in-place. Precast components shall be designed and provided for tie in with the box culvert described above. Prior to fabrication, shop drawings shall be submitted to ensure footers in the excavation are properly constructed. Precast reinforced wingwalls and headwalls shall comply with 602 of the 2016 ODOT Construction and Material Specifications, in the attached plan.