The Delaware River Port Authority dipped into its general fund to help pay off nearly $100 million of its debt last month.
That dropped the agency’s outstanding debt to $1.2 billion, but that figure will grow later this year, as the DRPA expects to borrow up to $400 million for long-term upgrades to its bridges and railroad, agency finance officials said Wednesday.
The DRPA operates four toll bridges over the Delaware River and the PATCO commuter rail line.
The agency’s debt has been a concern for years. More than 40 percent of bridge tolls go to pay principal and interest on it, significantly more than at other regional toll authorities.