HERTFORD â A major natural gas transmission line damaged during a bridge construction project in Hertford last week has been repaired a day ahead of schedule. Piedmont Natural Gas crews completed repairs to the companyâs Wynne Fork Road transmission line on Tuesday, Perquimans Emergency Services announced in a press release. That means families displaced by the ruptured gas line can return to their homes Tuesday evening, the release said. A PNC spokeswoman said the rupture happened Dec. 8 when workers for a state transportation contractor, who are building a replacement bridge on Wynne Fork Road, struck the transmission line. Repairs to the damaged line that included construction of a new bypass line began last weekend and were expected to be complete by Thursday.