Exhibit 99.1 NWPX Infrastructure Announces First Quarter 2026 Financial Results VANCOUVER, Washington—April 29, 2026—NWPX Infrastructure, Inc. (NASDAQ: NWPX) ("NWPX Infrastructure" and the "Company"), a leading manufacturer of water-related infrastructure products, today announced its financial results for the first quarter ended March 31, 2026. The Company will broadcast its first quarter 2026 earnings conference call on Thursday, April 30, 2026 at 7:00 a.m. PT. Management Commentary "We delivered a strong ...