Weekend. Crews will be replacing a bridge. This is a project that usually takes a lot longer than one weekend. It usually takes about 18 months of construction. They will get it done in just 55 hours. Everybody traveling north will have to get off right here. This is where drivers will pick up part of that detour. It could add more than an hour to your drive. We want to show you why this is being done. A bridge at mile marker 57. Lehigh county will be replaced over the weekend. Saturday morning im told crews will fly that new bridge into place. We already covered the time line. Usually 18 months construction now down to just 55 hours. One thing you want to keep in mind, this starts at 9 00 p. M. For more on detours and how we need to get around this traffic this weekend well have more coming up at 11 30. Nbc 10 news. Once again, it will close at 9 00 tonight. Northbound drivers will have to exit at the lemy valley interchange. If you need a closer look log onto nbc10. Com or open the n