Best of Arizona: HOV Bridges Hurdle Obstacles - Including Their Own Substructure
Submitted by Stanley Consultants
This project connects a 7-mi extension of high occupancy vehicle lanes along the SR 51 corridor to SR 101L via freeway-to-freeway HOV ramp connectors. Vertically, the ramps must ascend/descend rapidly to minimize length and cost. Horizontally, they must cross over mainline freeway traffic lanes at very severe skew angles. A previous firm’s attempt at the design called for a simple but expensive fly-over connector bridge. Stanley Consultants reduced the bridge length by 33% or 1,277 ft and reduced costs by $5.5 million.