The plan involves planting new supports down into the bedrock under the river bed, using powerful jacks to level the span, and, in some cases, removing and replacing the structures immediately under the bridge surface.
Officials in Delaware are still monitoring the I-495 bridge over the Christina River. They closed it last week because of support columns that shifted, causing safety concerns.
Eyewitness News reporter Jan Carabeo was able to speak with the engineering consulting company that tipped DelDOT off to this problem in the first place.
The action comes after the Interstate 495 bridge was closed because of tilting support columns.
State transportation officials said Wednesday that they believe a contractor is responsible for dumping a massive mound of dirt suspected of shifting the ground underneath an interstate highway bridge and forcing its closure.
DelDOT closed the bridge at 6 p.m. Monday because an inspection showed four of the 37 support columns are tilted as much as four percent out of vertical alignment.
The reconstruction of the Broadway Bridge between Gloucester City and Brooklawn will result in its closure from 7 a.m. to 5 p.m. through Friday.