Nearly $24 million in unexpected construction costs was added to the Southwest light-rail budget this week, a move that prompted frustration and pointed questions from some elected officials.
The $2 billion Green Line extension connecting downtown Minneapolis and Eden Prairie — the most expensive public works project in Minnesota history — began construction three years ago with a $204 million contingency budget to cover unexpected expenses.
But with nearly half the 14.5-mile line built, about 30% remains in the contingency fund, or roughly $61 million. About $21 million of the recently approved change orders is related to an unanticipated amount of contaminated soil that must be removed from work sites along the line.
"This really should have been caught," said Hennepin County Commissioner Irene Fernando at a special meeting Monday of the Southwest LRT Executive Change Control Board, which considers significant budget changes. "Twenty-one million dollars is no small number."
Hennepin County Commissioner Debbie Goettel, another member of the change board, called the soil issue a "huge miss."
Nonetheless, the committee unanimously approved the change order, as did the Metropolitan Council and its Transportation Committee in the past month.
The remaining $3 million approved by the control board was related to road and elevator construction, as well as other unforeseen conditions.
Project Director Jim Alexander said a Southwest consultant initially estimated that about 853,000 tons of contaminated soil would need to be removed during construction. But, he said, the real amount was more than double that.