(NL400) Flopped Straight on Monotone Board. What's My Line?

[LouisCyphre]

Button BUTTON ($762)
SB SMALL BLIND ($196)
BB Hero ($442.15)
UTG UTG ($320)</font>
UTG+1 UTG+1 ($405.50)
MP MP ($400)
CO-1 MP2 ($391)
CO CO ($74)

Preflop: Hero is in the BB with 8 9
UTG calls 4, 1 fold, MP checks, 3 folds, SMALL BLIND calls 2, Hero checks.

Flop (16) 7 J T
SMALL BLIND checks, Hero bets 12, UTG calls 12, MP calls 12, 1 fold.

Turn (52) 5
Hero bets 30, UTG calls 30, MP calls 30.

River (142) 2
Hero ???

UTG: 24/4.4/2.26/730 and plays NL200-1000. Hasnt done anything remarkable so far.
MP: unknown

Comments on all streets are appreciated.