Smith started in 14 games (Games 1-7 and 10–16) at right tackle, and also started wild card playoff game. He missed games 8-9 due to a concussion suffered on November 1 at Pittsburgh. On September 13 at Oakland, he helped lead pass protection that allowed no sacks and supported 396 yards of net offense. The following week, he contributed with a second straight sack-free game against the San Diego Chargers, in which the rushing offense put up 175 yards on the ground. In week 3, he provided pass protection for Andy Dalton to register a career-high 383 yards on September 27 against the Baltimore Ravens. The next week against the Kansas City Chiefs, he provided a key block for a 13-yard touchdown run by Giovani Bernard and helped allow no sacks as Bengals posted the first game in franchise history with more than 300 net passing yards (321) and four rushing touchdowns. On October 11 against the Seattle Seahawks, he helped the offense accumulate 419 total yards and score 17 points in the fourth quarter to overcome a 24–7 deficit. In week 6 at Buffalo, he helped allow no sacks as Andy Dalton posted 118.6 passer rating, with three scores and no interceptions. He supported a season-high passer rating (146.8) for Andy Dalton on December 6 at Cleveland, with only one sack allowed. On Dec 20 at San Francisco, he supported a 115.6 passer rating for AJ McCarron in his first NFL start.