Just got word from some people at my work that the tunnels will be undergoing a lot of construction this summer with weekend closures starting the last week in July. Just wanted to let you all know so that you can provide alternate directions if needed on invitations, websites, etc.
Here is a link:
http://www.msnbc.msn.com/id/46734376/ns/local_news-pittsburgh_pa/t/squirrel-hill-tunnel-closures-begin-monday-night/