Adam Stites of SB Nation took a look at all the offensive lines in the league and rated them out according to who was the best. It was a close race, but the Ravens won out with the best offensive line in the league according to Stites.
It was partially that the Ravens allowed less than 20 sacks the entire year, but what really put the Ravens over the top was that they had a powerful rushing attack, anchored by the offensive line. Not only could they keep quarterback Joe Flacco on his feet, but they allowed journeyman runningback Justin Forsett to earn his first Pro Bowl nod off a 1,266 yard season with 8 touchdowns.
One of the best things for the Ravens is that they have almost all of the offensive lineman locked up for a little while. Signing center Jeremy Zuttah and left tackle Eugene Monroe to contracts in 2013, the Ravens were able to secure a good portion of their line for a while. Right tackle Ricky Wagner was rated as one of the best lineman in the league last season and is returning from injury this season to progress even further through the 2016 season the Ravens have him signed through. The only two players on the line that are up for debate here is right guard Marshall Yanda and left guard Kelechi Osemele, as both are playing the final year of their deals. The Ravens are quickly looking to extend both players this offseason though, so even those players might find themselves as long term Ravens.
With Marshall Yanda representing the oldest player on the offensive line at the ripe old age of 30, the Ravens should feel good about the longevity of their players too. Everyone is either entering the prime of their careers or are playing in it. While not as young as the Dallas Cowboys' offensive line, the Ravens are still young enough up front to where they don't have to worry too much about a player retiring or succumbing to age related injuries.
There is no reason that with the players the Ravens have, their contract situations and their respective ages, that they can't keep this offensive line whole and developing further for another 3-4 years. That type of consistency is what makes champions.