Dive Brief:

• Crews from Zenith Tech of Waukesha, Wis., are pulling 12-hour shifts seven days a week until the Interstate 43 bridge over the Fox River in Green Bay can be reopened.
• Steel-reinforced concrete shafts 5 feet in diameter and 120 feet long are being sunk alongside several piers of the Leo Frigo Bridge to give them strength that Pier 22 lacked when it dropped 2.5 feet in late September and the roadway sagged.
• The whole project will come in at about $15 million, well under an initial estimate of $50 million, and Wisconsin officials think federal funds will cover most of the bill.

Dive Insight:

The state is blaming soil conditions and varying water levels for causing corrosion that let H-piles buckle under Pier 22. The repair job, which is using epoxy-coated rebar, will take more than 388 tons of steel and more than 1,300 cu. yds. of concrete for the new supports.