It could be a tie rod end, but it could also be a wheel bearing, a CV axle, a wheel is out of balance, a rim is bent or the belts in the tire are starting to come apart. If you want to figure it out yourself, swap out the tire with the spare and see if it goes away. If it does, then it's something in the tire, whether it's the balance, the rim or the tire itself is bad. Then you can just take your already removed tire to a shop and have it balanced/looked at and they can tell you what is wrong. If the vibration doesn't go away after swapping for the spare, then take the car in and have it looked at.
Source: work in an auto repair shop.