Did I wuss out on the river?

[Big Folder]

Despite the fact that 99.9% of the time the answer is yes, i wanted to get some input on this hand.

I have TT in CO. 4 limpers including villian who is reasonably tight preflop. Postflop I don't have much of a read but he seems tight. I raise.

Flop comes 8[img]/images/graemlins/heart.gif[/img] 8 [img]/images/graemlins/spade.gif[/img] 3[img]/images/graemlins/heart.gif[/img]. Checked to me. I bet, bb calls, villian calls.

Turn is a K[img]/images/graemlins/club.gif[/img]. Checked to me. I bet, bb folds, villian calls.

River is a A[img]/images/graemlins/club.gif[/img]. Checked to me. I check....

I checked because I dont see what he would call with that I beat. The only thing really is pockets, but I dont know if he would do this in this spot. Thoughts?