The work to rebuild Baltimore's Francis Scott Key Bridge, with the first test pile installed in the Patapsco River.

According to the Maryland Transportation Authority (MDTA), those piles are eight feet in diameter and more than 200 feet long. Twelve of the test piles will be driven into the riverbed, two per week for the next month and a half.

The test piles will determine the load-bearing capacity and confirm the overall design's integrity and feasibility. The piles will support a floating pier, which is built to absorb impact.

"We're going to drive [steel piles] them into the Patapsco. We're going to place some testing equipment on them that exerts a lot of force, and then that tells us a lot of key information about the geotechnical conditions below ground… They should be able to

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