A tentative contract deal has been reached between the Broadway stagehands’ union, Local One, and the American League of Theaters and Producers, following a 19-day strike that shuttered all but eight Broadway theaters and cost the city millions in lost revenue.

Emerging from the talks at about 11 p.m. last night, the executive director of the league, Charlotte St. Martin, announced to assembled stagehands and reporters that the strike had ended. Details of the agreement were not made public.

“The agreement is a good compromise that serves our industry, and what is most important is that Broadway lights will once again be shining brightly,” Ms. St. Martin said, after boos and hisses from stagehands quieted.

The president of Local One, James Claffey Jr., exited the negotiation site moments later, flanked by members of the union negotiating team, all of whom were holding up their index fingers. About 50 stagehands, who had gathered outside after hearing that a strike deal was imminent, burst into cheers and applause.

“Brothers and sisters of Local One, you have represented yourselves, your families, and your union proud,” Mr. Claffey said, shaking hands with colleagues.

A spokesman for the union, Bruce Cohen, said, “Let’s go put on a show.”

Curtains will go up on all shows in time for tomorrow’s performances, Ms. St. Martin said, and actors and musicians will receive notification to arrive at the theater for rehearsal.

Mayor Bloomberg welcomed the announcement.

“Tonight’s announcement of a tentative agreement between the Broadway stagehands and theater producers is great news not just for everyone who earns their living on or around Broadway, but for everyone who lives in, works in, or visits New York City,” he said in a statement. “I have always believed that the best way to resolve labor disputes is around the bargaining table, and tonight’s tentative agreement proves how true that is.”

When asked how he was going to celebrate, Mr. Claffey said, “I want my guys to get out of the cold and go back to their families.”

One stagehand was overheard telling Mr. Claffey, “Christmas came early this year.”

Local One’s membership will have 10 days to review the deal and vote on whether to ratify it. If any part is rejected, league and union representatives will return to the negotiating table to hammer out the final details. In the interim, stagehands will return to work under a temporary contract.

Yesterday’s negotiations, which began just after 10 a.m. at the league negotiator’s law firm, Proskauer Rose, in Times Square, were focused on wages. Other issues, including how many stagehands could be hired during the period when a production moves into a theater, known as the load-in, were settled in prior talks.

The two parties earlier negotiated all night Sunday and Monday, following nearly 24 hours of talks two weeks ago.

Mr. Cohen said yesterday afternoon that no side would emerge an absolute victor.

“There will be no winners. There have been exchanges,” he said.

The last walkout to hit Broadway was the musicians’ strike in 2003, which lasted five days. The next contract to expire will be the actors’ union, Actors’ Equity Association, in July.