I took a short roadtrip in and around Catoosa and Claremore in Oklahoma. I noted a few things:
The left exit for US 66 at Cherokee Curve is so ridiculous. I know I complain about it a lot, but it deserves it. I took 44/412 east to 66 east and it sucked. It must have been really bad when I-44 went through there.
Fart Smock bridge on Pine over I-44/Creek Turnpike is gone, replaced with fill to the north, effectively severing the abandoned turnpike. It looks like with a 4 wheel drive truck that you could actually get to the old turnpike and drive it.
Ramp from Pine to EB I-44 signed as "Creek Turnpike" with no mention of I-44 or the Will Rogers Turnpike. This may be the only Creek Turnpike marker extant.
Stretch of OK 266 between the turnpike and US 66 is very short. I don't know why there was ever a gap.