Connecticut's Arrigoni Bridge will be featured on a new postage stamp beginning Aug. 24.

An event at Portland's Waverly Senior Center, open to the public, will be held to mark the occasion.

The Arrigoni Bridge stamp is the first in a series of four stamps commemorating bridges across the country, according to the American Philatelic Society, a nonprofit organization for stamp collectors. The Bob Kerrey Pedestrian Bridge in Nebraska, Skydance Bridge in Oklahoma and Iowa-Illinois Memorial Bridge connecting the two states will complete the set.

These will be 25-cent stamps used for commercial mailers, according to the American Philatelic Society; a permit is required to use them.

Stamp collecting organization, the Connecticut Cover Club, is working with the Portland Historic Society and the town of Portland to celebrate the stamp's release with an event at 11 a.m. on Aug. 24. According to the American Philatelic Society, Portland First Selectman Ryan Curley and a descendant of the Arrigoni family will be in attendance, as well as Rich Hoffman, president of the Connecticut Cover Club, and Foster Miller, a director of the American First Day Cover Society.

A limited number of the stamps will be available for purchase at the event and at the Portland post office. More than 6.2 million stamps will be printed with the design, according to the American Philatelic Society. The majority will be sold to businesses in coils of 3,000 or 10,000 stamps.

The Arrigoni Bridge has undergone a multiphase repair and construction project in recent years. It spans the Connecticut River to connect Middletown and Portland and is named for Charles J. Arrigoni, a politician who served in both the state House of Representatives and state Senate from 1933-1936 and 1937-1940, respectively. Historic documents from the city of Middletown say that Arrigoni served on committees that got authorization for and oversaw construction of the bridge, which opened in 1935.