Location: I-10 and Grand Pkwy, Harris Cty Reassurance shield after SH 99, omitting US-90. This is the last standalone reassurance shield for a while. Location: Katy Fwy and Park Ten Blvd, Houston As we enter the city of Houston, we’re 1 1/4 miles from SH 6. The tolled part of I-10 starts in two miles. … Continue reading U.S. Route 90, TX-99 to TX-6