Even the Bloods hate the road-rage-inducing Pulaski Skyway construction project.

The ruthless gang — which has vowed to kill Jersey City police officers to avenge a cop-killer shot dead by police — plans to target officers stationed on the bridge because they are “sitting ducks” at a “fixed post,” The Post has learned.

“The Bloods [plan to] . . . take ­retaliatory action against police officers who are working a traffic post on the Pulaski Skyway construction detail,” according to an internal memo from the New Jersey State Police obtained by The Post. “Troopers operating in and around Jersey City should remain vigilant and demonstrate heightened caution,” the memo, sent out Tuesday, instructs officers.

Jersey City officers have begun doubling up on patrols instead of riding solo, a source said.

The gang threats were made ­after the fatal shooting of armed robber Lawrence Campbell, 27, on Sunday.

Campbell opened fire on Officer Melvin Santiago, 23, in a Walgreens parking lot in Jersey City early Sunday, fatally wounding him in the head.

Santiago’s partner fired back amid the fusillade, killing Campbell.

Jersey City Mayor Steven Fulop downplayed the threat Wednesday, and said gang alerts are often not credible.

“Every urban area, every police department, knows that after every single police shooting, threats come in,” Fulop said, adding that “99.9 percent of the time, they’re not credible, but we always take them seriously.”

On Wednesday, State Police sent out a memo warning officers to take the threats seriously, a law enforcement source said.

Meanwhile, an officer was facing disciplinary charges for posting the advisory about the Bloods threat on his Facebook page.

The mayor said the cop who made the post would be disciplined for possibly violating department protocol.

The Pulaski threat puts renewed focus on a project that has left drivers steaming.

The roadway was closed for two years starting in April to perform upgrades, infuriating thousands who’ve been forced to use longer alternate routes.

The shutdown affects roughly 40,000 vehicles that daily used the bridge to reach New York City through the Holland Tunnel.

Additional reporting by Bruce Golding