One of the country's major shopping center developers is planning to build a major regional shopping facility in the Woodbridge area of Prince William County.

Ernest W. Hahn, Inc., whose firm is among the five largest shopping center developers in the country, plans to build 135 stores on 100 acres just off of 1-95 and Route 642.

A spokesman for the Hahn company, which is based in Hawthorne, Calif., said the company has been talking with four department stores about anchoring the center.

"There is considerable interest by major department stores in that area," the spokesman said, noting that many Woodbridge residents now drive up to 15 miles to Fairfax County's Springfield Mall to do their major shopping. "All you have to do is look at the number of permits and petitions being filed in the county to know the potential for development there."

Hahn has already begun to seek the necessary government approval for the project. Prince William's Board of Supervisors last month signed a contract to provide water and sewer service to the proposed $60 million center, beginning in 1979 at the earliest.

The developer has also met with highway officials to discuss a change in the design of the I-95 interchange near the proposed site.

The center would be built on land now owned by J. V. Elrod. Hahn has an option to purchase 100 acres of Elrod's 296-acre parcel. The option expires August 20, and Elrod declined to comment on the project until then.