Monroe was injured late in last Sunday's loss at the Houston Texans, and he didn't practice all week. This injury is compounded by the fact the Ravens put right tackle Rick Wagner (foot) on injured reserve this week.
When the Ravens were without both offensive tackles at the end of last Sunday's game, James Hurst played at left tackle, Marshal Yanda moved from right guard to right tackle and John Urschel stepped in at right guard. Hurst and Urschel have combined to start six games in their rookie seasons.
"Both of those guys have done it already and played, been out there. They’ve done it well," coach John Harbaugh said. "It gives us a lot of confidence that they can play very well.”
Harbaugh later added, "We're very confident we’re going to put a good offensive line out there one way or another.”
Running back Fitzgerald Toussaint is listed as questionable with injured ribs. He was added to the injury report Friday after being limited in practice. Toussaint received the second-most snaps at running back last Sunday behind starter Justin Forsett.