As Denver Broncos owner Pat Bowlen continues to push for a new stadium, city officials are willing to spend $48 million for improvements at Mile High Stadium over the next 13 years, according to a published report.

The Rocky Mountain News cites interviews and documents from Mayor Wellington Webb's Sports Facilities Task Force, but the stadium debate won't go public until Tuesday when Bowlen presents a team prospectus to the task force."They've got a tough sell," said Bruce Alexander, manager of the Parks and Recreation Department, which runs Mile High.

The Broncos want a new lease giving them a cut of parking and concessions. which bring in about $1 million a year. Then, within 5 to 7 years, they would like a $200 million stadium that would generate more money, the News said.

The city's plan details maintenance work that would be done up to the year 2008. That's when $50 million in bond debt will be retired. The bond's are paid by a seat tax - a 10 percent surcharge on tickets to all events.