The Port Washington Water District will replace a corroding 80-year-old, 102-foot-tall water storage tank with a new steel structure of the same size.

The district’s board voted on a $5.1 million borrowing plan at its March 16 meeting after also considering two other options: adding storage tanks and a booster-pumping station for $6.3 million, or fixing the existing tower for $3.2 million.

“Water tanks designed today are more resilient, easier to maintain and better equipped to optimize water pressure during times of peak demand and fire emergencies,” David Brackett, chairman of the district’s board of commissioners, wrote in a news release announcing the vote. “Replacing the tank now with one that meets today’s stringent safety and structural standards will guarantee this vital component of our water supply infrastructure is in sound condition for decades to come.”

District Commissioner Mindy Germain said in a statement that “the construction of a new tank will cause some inconveniences for those who live closest to the site, but we will work hard to mitigate the impacts.”

District officials said engineers will be at the site on Longview Road between Hillcrest and Beacon Hill roads to conduct surveys and collect soil samples. Officials said it will take up to six months for engineers to design the replacement tank and receive the required permits from the Nassau County Department of Health.

Officials said they expect the tank replacement project to be finished in 16 months.

The funding comes from an $18.4 million bond authorization approved in 2010 by North Hempstead Town.

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Officials had last repaired the structure in 1999.