BERNE — A closed county bridge on Bradt Hollow Road in the town of Berne won’t be reopened until late August.

About 543 vehicles cross the bridge each day, which is considered low volume, said Lisa Ramundo, the Albany County Department of Public Works Commissioner, in an emailed statement on Wednesday.

The bridge structure had been replaced by Albany County workers and was scheduled to be opened last November. Deterioration of beams reduced the maximum weight allowed on the bridge to 12 tons, said Ramundo.

But the opening was delayed after the weight of the pavement appeared to be causing the ground to settle and the slope to move, according to Albany County spokeswoman Mary Rozak, in an emailed statement last week. The county hired an engineering firm to investigate the issue, she wrote.

“Months of data was needed to come up with the information required to design a solution to the problem,” she said.

Ramundo said that the previous structure had six feet of concrete deck over prestressed concrete beams. The current structure has 9-and-a-half feet of concrete deck over steel girders.

The county met with the engineering firm Barton and Loguidice as well as a geotechnical engineering firm, Dente, on Tuesday, said Ramundo. Their findings show that removing excess topsoil on the side near Dutch Settlement Road slowed some movement.

“We are continuing our research to determine the exact depth of excavation required to completely halt movement of the roadway,” she wrote.

The commissioner said that these types of structural issues are unusual to come across, and that the previous bridge had not had such issues.

Rozak wrote last week that construction of the bridge is anticipated in August, and would last three weeks.