{"12":{"field-type":"comment-f","field-title":"Description","field-content":"Steel Structural Tunnel Liner Plate was specified by Minnesota DOT to reline twin 10' X 10' reinforced concrete box culverts. The project was in St Peter, MN on TH 22. An arch shape on steel channels was used for relining instead of round pipe. The invert of the culvert could not be raised so a hot dip galvanized horseshoe shaped arched was used to maximum the flow and not raise the invert elevation of the culvert. The culvert invert could not be raised as it would affect the hydraulics of the culvert. The entire project was constructed without disrupting any traffic. A new concrete headwall was poured around the plate arch to finish construction of the culvert."},"13":{"field-type":"text-f","field-title":"Name","field-content":"Bob Moore"}}