Grading for the new northbound HOV lane just south of S. 320th Street.
A crew member attends to median barrier construction. Southbound HOVs will descend the ramp here to enter the mainline HOV lane. Northbound HOVs will ascend the ramp here and turn left onto the S. 317th bridge to exit the freeway.
Excavating to build a retaining wall in the median toward the north end of the HOV ramps. You can barely see the S. 317th bridge in the background.
The median end of the S. 317th bridge. We've backfilled between the HOV ramp walls almost all the way up to the height of the bridge, and workers are preparing the end of the bridge to connect to the ramps.
Building barrier between what will be the northbound and southbound HOV lanes, just north of the S. 320th bridge.
The new HOV on and off-ramps in the median are taking shape with amazing speed. View last month's photo of approximately the same area.
Excavating to build the new northbound HOV lane between S. 320th and Miltary Road. You can see wall panels stacked on the right awaiting installation.
Traffic heads west from the roundabout on S. 317th, toward the transit center site.
We opened the roundabout intersection (minus the leg coming from the S. 317th bridge) on Saturday, Oct. 1. Here, traffic travels northbound through the roundabout on Sunday.
We used modified concrete with a brick pattern on the inside of the roundabout. This view looks east toward I-5 - you can see one of the retaining walls for the HOV ramps in the background.
New concrete pavement around the roundabout. This view looks northeast, toward the 28th Ave. S. leg of the intersection.
Installing curbs along the new roundabout intersection at S. 317th/28th S. The sign at left is the Regional T, which will point traffic toward Sound Transit's new Federal Way Transit Center.