Steelers sign LB Steven Johnson to 1-year deal

San Francisco 49ers Jarryd Hayne (38), of Australia, is hit by Denver Broncos middle linebacker Steven Johnson (53) as Josh Bush (20) pursues during the second half of an NFL preseason football game, Saturday, Aug. 29, 2015, in Denver. (Jack Dempsey/AP)

PITTSBURGH — The Pittsburgh Steelers have signed linebacker Steven Johnson to a one-year deal, giving the club depth at one of their most important positions heading into 2016.

The 27-year-old Johnson is entering his fifth NFL season. He made the Denver Broncos as an undrafted rookie free agent in 2012 and played with the Broncos through 2014 before spending last season with the Tennessee Titans.

Primarily used on special teams, Johnson has appeared in 57 games during his career, with seven starts. He signed with Pittsburgh on Friday.

The Steelers lost linebackers Sean Spence and Terence Garvin during free agency, both staples on special teams. Pittsburgh is also waiting to see if veteran outside linebacker James Harrison returns for a 14th season.