One of the largest municipal bankruptcy of United States to be announced in near future as Jefferson County of Alabama State hired lawyers for possible bankruptcy filing as it is unable to pay its more than $3 billion debt for its sewer system.

The Jefferson County Commission approved resolutions Tuesday to hire prominent bankruptcy lawyers and to sell bonds later in case money is needed to emerge from bankruptcy.

Jefferson is Alabama's most populous county and seat of Birmingham. It's been trying for three years to avoid filing bankruptcy over debt payments it can no longer afford.

Two of the five commissioners say there's an 80 percent chance the county will file bankruptcy. The vote could come at a meeting scheduled for Thursday in Birmingham.

The commission president, David Carrington, says other possibilities include extending talks with creditors or accepting a settlement offer.