PHOENIX (AP) -- If they can raise the money, about $20 million, Phoenix Zoo officials envision creating a state-of-the-art facility that will make the experience more entertaining for guests while creating a better life for the animals.

Despite a weak economy, zoo backers plan to launch a fundraising drive Wednesday.

Plans call for removing a concrete bunker-style enclosure for orangutans and replacing it with a $5 million two-story dwelling, about triple the size of the current exhibit, with an observation tower and lush vegetation.

Another $3.2 million is earmarked for an entry oasis and native-wildlife exhibit that visitors will encounter the moment they set foot off the zoo's parking lot in Papago Park.

"We want people to have a very intimate experience," said Bert Castro, the zoo's president.

"We need the type of exhibits that get people excited."

This is the most comprehensive program in the history of the zoo, said Ed Fox, a vice president of Arizona Public Service Co., and a co-chair of the campaign.

"It became clear to (zoo) board members there needed to be a future vision," he said.

Officials say they have already raised $6 million through private donors.

The zoo is asking the City of Phoenix to help pay for a new water and sewer infrastructure.

Without it, the zoo can't expand, Fox said.

The zoo is requesting $6 million additional over three years in Phoenix Parks and Preserve Initiative funding.

The initiative is expected to generate $30 million a year.

The Phoenix City Council was expected to vote on the issue by December.

The zoo, which has 1.5 million visitors a year, is at a critical crossroads, Castro said.

"We're struggling to meet the demands of the city," he said.

---

Information from: The Arizona Republic, http://www.azcentral.com

© 2008 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. Learn more about our Privacy Policy.