yep, George. it's called ABC - Accellerated Bridge Construction.
Here's the page from PA Turnpike, and they include a video animation of the fast bridge replacement process from Michigan DOT.
https://www.paturnpike.com/travel/accelerated_bridge_constru...
I was visiting my fiancee Ann in Reading Hospital this morning and saw on the news that this bridge is being replaced this weekend actually having started on Friday.The Northeast Extension will open back up on Monday according to the news from the Allentown exit to the Mahoning Valley exit.Also they showed that the bridge is coming in already preformed which will speed up the replacement.I never knew this was possible with today's bridges.
I mentioned the replacement of this bridge this coming weekend on the forum page.I didn't look for the listing on the Lehigh County site.
Dana and Kay,i have been over this bridge on I-476 but never on Crackersport rd.This bridge didn't look to me to be needing to be replaced.Then again,i don't work for PennDOT.Thanks for finding out about this bridge,Dana and Kay.
George, Don is the bridge Titan on this one. Crackersport road view has interesting additions to ,I'm assuming control concrete spalling. looks like banding on columns and wood bottom decking. 50's and 60's stringers are disappearing in PA. Was in PA not to long back and got a few shots of a 1966 stringer, had interesting railing and while not hugely rare was going to be gone in a week. Might be less than historic or notable but the fact of being gone is hard to dispute! Shout out to Don, YOU ROCK DUDE!
Great idea PennDOT using the ABC idea Don.I hope they use it on all concrete bridges that should be replaced.I just hope they leave the truss bridges alone.