I-35 Capital Express North Project Plan – Wells Branch Parkway – Audio Transcript
TxDOT is proposing to construct a diverging diamond intersection or DDI at Wells Branch Parkway. A DDI addresses congestion by temporarily shifting traffic to the left side of the roadway prior to entering the intersection. Once on the left side of the roadway, vehicles can freely turn left rather than waiting for oncoming traffic to clear or for a left-turn signal. As an example, southbound traffic exiting the mainlanes will turn left onto eastbound Wells Branch Parkway at a signalized light. Traffic will be able to turn left onto the northbound frontage road without having to stop at a traffic light.
Northbound and southbound through-traffic on the frontage road is able to proceed through the Wells Branch Parkway intersection by using a bypass lane and avoiding the signal.