Braided Ramp
Braided ramps are ramps that cross over each other and are vertically separated by concrete pillars that elevate one or more of them. Braided ramps streamline traffic flow for drivers to reach their destinations. These ramps separate incoming and exiting traffic by having one ramp pass over the other, thereby eliminating traffic weaving, improving safety and easing congestion.
Illustration: Braided Ramp
Photograph: Braided Ramp
Source: The image above is I-35 from U.S. 79 to SH 45 North in Round Rock, Texas.
A. Braided ramp entrance ramp: bridge structure that goes over the exit ramp and merges with northbound mainlane traffic.
B. Braided ramp exit ramp: bridge structure that goes under the entrance ramp and merges with northbound frontage road traffic.