PORTLAND, Ore. (AP) _ A Portland policeman confined to a wheelchair by Lou Gehrig's disease will fulfill a lifelong dream this week when he attends his first World Series, thanks to his fellow officers.

Lt. David R. Kinnaman, 41, who talks and moves with difficulty, wept along with others present when he learned about the gift Friday in an emotional visit to Police Chief Penny Harrington's office.

Kinnaman got a telephone call there from Rep. Les AuCoin, D-Ore., who reported he had rounded up hard-to-get tickets for the policeman and his wife Jane to see the St. Louis Cardinals play the Kansas City Royals in St. Louis.

Amyotrophic lateral sclerosis, known as Lou Gehrig's disease after the baseball great who was its most famous victim, has taken a growing toll on Kinnaman in the last three years. The disease results in the progressive degeneration of the nervous system and is usually fatal.

Kinnaman, a 17-year police veteran who is on medical leave, relayed his thanks to AuCoin and said he ''is an avid Card fan now.''

The trip was arranged by Kinnaman's friends in the Portland Police Bureau.

Sgt. David Butzer, spokesman for the bureau, said a campaign started by Sgt. Jack Fawcett and Detective Michael Guinn raised $946 for the couple's expenses. Continental Airlines agreed to donate air transportation, while the St. Louis Police Department will arrange to pick up and lodge the Kinnamans in St. Louis.

Kinnaman and his wife will fly to St. Louis Monday and see at least two games, Butzer said.

The third and fourth games of the series are scheduled for Tuesday and Wednesday. A fifth game, if needed, would be played Thursday.

Mrs. Kinnaman said neither she nor her husband have attended a World Series game.