You're right. I remember the southbound divergence of the Toll road now - remember it as a sudden thing you had best know about up front because if you didn't you have to scramble and the knowing folks on that road really trundle by unforgivingly! Just a Woodlands visitor then, often lost. Nice place with hidden everything (Shopping, gas stations, business offices). 4-way stop signs and everyone polite. Policemen on horses. Pappadeux restaurant.
Stay safe.