SAN FRANCISCO - Standard & Poor's Ratings Services assigned its 'A+' rating to the New Jersey Turnpike Authority's (NJTA) $750 million series 2015 E turnpike revenue bonds. At the same time, Standard & Poor's affirmed its 'A+' long-term rating and underlying rating (SPUR) on the authority's revenue bonds outstanding. The outlook is stable. "The 'A+' ratings reflect our assessment of the toll roads' essential position, combined with a stable operating profile and low toll structure," said Standard & Poor's credit analyst Mary Ellen Wriedt. Bond proceeds will be used to partly fund the authority's capital improvement plan. The turnpike has about $10.5 billion in debt outstanding, with an additional (including the current issue) $2.1 billion in debt planned in the next four years. The overall plan includes road widening, bridge work, roadway improvements, interchange improvements, and toll plaza upgrades. Except for various widening projects, the plan includes no system expansion. The authority owns and operates both the New Jersey Turnpike and the Garden State Parkway.