Crappy river spot with overpair in multiway pot

[aislephive]

No reads on BB, he is 21/7 over a very miniscule sample size of 15 hands, fwiw. CO is a complete moron playing half his hands.

Thoughts on all streets appreciated. I thought the turn was sort of a tricky spot, I mean I believe they're both drawing on the flop almost always, but the turn does complete stuff like 56/57/A5 which I'm sure all peel the flop.

As played, call river? I don't know if he is ever bluffing here or value-betting worse, but I don't have any idea how he plays except he likely has some preflop hand selection given the 15 hands prior to this one. If you call this, up to what river bet size would you call?

Hope this isn't too standard, but running pretty bad this month and am trying to make sure I'm not doing anything stupid.

Party Poker - No Limit Hold'em Cash Game - $2/$4 Blinds - 5 Players - (LegoPoker Hand History Converter)

SB: $382.20
BB: $466.28
Hero (UTG): $400.00
CO: $746.90
BTN: $67.00

Preflop: Hero is dealt T[img]/images/graemlins/diamond.gif[/img] T[img]/images/graemlins/club.gif[/img] (5 Players)
<font color="red">Hero raises to $16.00</font>, CO calls $16.00, BTN calls $16.00, SB folds, BB calls $12.00

Flop: ($66) 5[img]/images/graemlins/diamond.gif[/img] 3[img]/images/graemlins/spade.gif[/img] 4[img]/images/graemlins/diamond.gif[/img] (4 Players)
BB checks, <font color="red">Hero bets $52.00</font>, CO calls $52.00, BTN folds, BB calls $52.00

Turn: ($222) 5[img]/images/graemlins/club.gif[/img] (3 Players)
BB checks, Hero checks, CO checks

River: ($222) 8[img]/images/graemlins/club.gif[/img] (3 Players)
<font color="red">BB bets $84.00</font>, Hero ???