CHICAGO (AP) — Construction equipment is starting to take big bites out of Wrigley Field’s exterior outfield walls.

The demolition of the famous bleachers at the historic ballpark in Chicago is part of a project to build a large electronic sign and six other outfield signs.

Chicago Cubs spokesman Julian Green said Thursday that the affected walls won’t be rebuilt for several weeks. He says the ivy-covered outfield wall will not be taken down.

The work is part of the Cubs’ privately funded $575 million renovation project. The Cubs started the project despite a legal fight involving owners of rooftop businesses across the street.

Those businesses fear their views of the field will be blocked. They have sued the city.

Copyright 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.