BISMARCK, N.D. (AP) — Gov. Doug Burgum has signed a landmark $680 million infrastructure bonding bill that will use earnings from North Dakota’s multibillion-dollar oil piggybank to pay off the money. The bipartisan bill has highlighted North Dakota’s legislative session and got wide support. The legislation represents the most amount of money borrowed in state history. It also has helped push the Legislature’s proposed two-year budget to a record $15.8 billion, or about a billion dollars more than the current budget cycle that ends June 30. The legislation allots three-quarters of the bond money for flood-control projects in Fargo and Minot.