100NL: Flopped bottom straight, tough turn/river, linecheck

[Aero1441]

Hero (SB): $108.90
BB: $34.70
UTG: $84.00
UTG+1: $107.98
CO: $99.95
BTN: $106.15

Pre-Flop: 4 [img]/images/graemlins/club.gif[/img] 3 [img]/images/graemlins/club.gif[/img] dealt to Hero (SB)
UTG raises to $2.00, UTG+1 calls, CO calls, BTN folds, Hero calls, BB calls

Flop: ($10.00) 5 [img]/images/graemlins/diamond.gif[/img] 6 [img]/images/graemlins/club.gif[/img] 7 [img]/images/graemlins/spade.gif[/img] (3 Players)
Hero checks, BB checks, UTG bets $5.00, UTG+1 folds, CO calls, Hero raises to $22.00, BB folds, UTG calls, CO folds

Turn: ($59.00) 6 [img]/images/graemlins/spade.gif[/img] (2 Players)
Hero bets $20.00, UTG calls

River: ($99.00) 8 [img]/images/graemlins/heart.gif[/img] (2 Players)
Hero ?

Do I bet this river and if so how much? And are my other lines good? When I look at this hand, maybe I should have bet the turn more?