A bill to approve private investment to help finance public-works initiatives in New York state, including the $5.2 billion Tappan Zee Bridge, is being sought by Gov. Andrew Cuomo. It's possible that the legislation would include investment in state-owned buildings and parks, as well as transportation projects. "Infrastructure is an asset class that’s incredibly attractive to investors who want long, stable returns," said D.J. Gribbin, managing director of Macquarie Capital (USA) Inc.