Bruce Allen and the Redskins traded with rival Dallas to move out of the 34th pick.( Patrick McDermott/Getty Images) Bruce Allen and the Redskins traded with rival Dallas to move out of the 34th pick.( Patrick McDermott/Getty Images)

The Redskins passed on the chance to draft 34th overall and instead worked out a trade with the Dallas Cowboys to pick up an additional pick.

The Redskins received Dallas’s second-round pick (47th overall), and the Cowboys’ third-rounder (78th).

Washington also holds its own third-round pick (66th overall).

Redskins General Manager Bruce Allen on Tuesday made it clear that because the team had only six picks in the draft, decision-makers liked the idea of moving back in the draft to acquire additional picks. He said that if the opportunity presented itself, and if Washington could still get a player of similar talent later in the round as it could have early in the second round, he would pull the trigger.

“We have several players who have about the same grade on them, and if that’s the case, and we get the opportunity, we would move,” Allen said.

Washington is believed to be in search of help on the offensive line – particularly right tackle, where incumbent starter Tyler Polumbus has only the coming season left on his contract.

Safety also ranks among the Redskins needs. The team has veterans Brandon Meriweather and Ryan Clark penciled in at the starters at free and strong safety, respectively. But both players’ contracts expire after this season. Washington last season drafted Phillip Thomas in the fourth round and Bacarri Rambo in the sixth round. But Thomas missed all of his rookie season with injury, and Rambo struggled mightily in limited action at free safety.

The long-term picture at cornerback also remains murky for Washington. Second-year pro David Amerson (a second-round pick last season)  is projected to start opposite DeAngelo Hall. But Hall turns 31 this year, and the team lacks promising prospects to develop behind them.

Meanwhile, Washington has a similar situation at inside linebacker. Perry Riley Jr. returns as the leading tackler. And the team this offseason signed three veterans primarily used as special-teams players in Adam Hayward, Akeem Jordan and Darryl Sharpton. But beyond injury-plagued 2012 fourth-rounder Keenan Robinson, the Redskins find themselves short on developmental players at that position as well.