Location: Lake Hefner Pkwy and 50th St, Oklahoma City Reassurance shield for 74 but not 3 as SH-3 joins the freeway. Location: Lake Hefner Pkwy and I-44, Oklahoma City A mile or so later, we’ll approach I-44 and SH-66. Location: Lake Hefner Pkwy and I-44, Oklahoma City Exit for 66 west. Exit in a 1/4 … Continue reading Oklahoma State Highway 3, OK-74 to I-44/OK-66/OK-74