Work is expected to begin today to remove cracked concrete from Waikiki Natatorium War Memorial’s deteriorating seawall.

Honolulu officials say a recent inspection revealed that portions of the concrete seawall are severely cracked and could fall into the water, injuring swimmers.

City officials are asking the public to stay away from the structure.

The 100-meter ocean pool was opened in 1927 as a tribute to servicemen from Hawaii who fought and died in World War I.

The work will include removal of cracked concrete along the entire perimeter of the pool. Workers will erect temporary scaffolds and use hand tools to remove the damaged concrete, which will be lowered onto rafts and brought to shore.

Work is expected to last five days, depending on tide and wave conditions.