Relations between Republicans and Democrats on the highly partisan House Intelligence Committee have grown so poisonous that GOP members are planning to wall themselves off from the opposition.

A partition to separate Republican and Democratic members and their staffers will be built by spring, according to CBS News.

The plan reportedly was cooked up by Committee Chairman Devin Nunes, a California Republican who has been releasing selected information about the Russia investigation designed to defend President Trump — but which critics from both sides of the aisle have called misleading.

Other Republican members were caught off guard by the revelation — and claimed they knew nothing about it.

“I’m not part of that decision. You’ve got to talk to Devin. I don’t know what they’re trying to do one way or the other,” Texas Rep. Mike Conaway told the network.

“I swear to God I didn’t know that,” said Florida Rep. Tom Rooney.

But, he added, “The level of trust and the level of everything down there is — it’s poison. It’s absolute poison down there.”

Bipartisanship, he said, “is gone. It’s gone from that committee.”

The panel has been investigating Russia’s meddling in the presidential election and possible collusion with the Trump campaign, as have the Senate Intelligence Committee and special counsel Robert Mueller.

But Nunes has tried to shift the focus onto supposed misdeeds by Hillary Clinton, ex-President Barack Obama and the Justice Department.

That has infuriated the ranking Democrat, Rep. Adam Schiff of California, who has accused Nunes — who served on Trump’s transition team — and other GOP members of carrying water for the president.

Trump himself has weighed in with a typical taunt on Twitter slamming Schiff, and a second hailing Nunes as “a hero.”

“Little Adam Schiff, who is desperate to run for higher office, is one of the biggest liars and leakers in Washington, right up there with Comey, Warner, Brennan and Clapper! Adam leaves closed committee hearings to illegally leak confidential information. Must be stopped!,” the first tweet said, referring to Virginia Sen. Mark Warner and former top officials of the US intelligence community.

The second soon followed, with the president tweeting, “Representative Devin Nunes, a man of tremendous courage and grit, may someday be recognized as a Great American Hero for what he has exposed and what he has had to endure.”

Schiff fired back, taunting the commander-in-chief for spending so much time watching cable TV and then firing off tweets about anything he sees that sets him off — time the White House calls Trump’s “Executive Time.”

“Mr. President, I see you’ve had a busy morning of ‘Executive Time.’ Instead of tweeting false smears, the American people would appreciate it if you turned off the TV and helped solve the funding crisis, protected Dreamers or…really anything else,” he wrote.

The hyperpartisan squabbling has cratered Americans’ trust in the committee, with a Politico/Morning Consult poll out Wednesday showing that only 9 percent of registered voters said they had “a lot of confidence” in the panel.

Maryland Democratic Rep. C.A. Dutch Ruppersberger, who served on it for 12 years and was ranking member for four, said the dueling sides should knock off the nonsense and get to work.

“When Devin and Schiff get over this battle they’re talking about right now, it will be right for our country for those two to work together in a bipartisan way,” Ruppersberger told CBS.

“These are some of the most dangerous times our country has ever faced,” he said, citing threats from Russia, China and ISIS.

“If there was ever a time to work together, it’s now.”