Standard & Poor's has placed the Puerto Rico Highway and Transportation Authority's grant anticipation revenue bonds on credit watch with negative implications.
Standard & Poor's rates the GARBs A-plus. The credit watch affects $93.6 million of debt, the agency said.
"The placement follows our repeated attempts to obtain timely and satisfactory information to maintain our ratings in accordance with our criteria and policies," said analyst Adam Torres.
S&P has made Jan. 31 the deadline to receive requested information from the authority. If it does not meet that date, the ratings could be downgraded and suspended.
Moody's Investors Service rates the authority's Series 2004 and 2008 GARBs A1.