I-90 - Two-Way Transit and HOV Operations - April to June 2007

June 2007 - Retaining wall construction along the West Mercer Way westbound on-ramp. Using the large drill on the right, crews drill shafts into which they place steel piles. They then pour concrete down the chute (on the left side of the photo) to set the pile in place.


May 2007 - We're demolishing the existing barrier along the West Mercer Way on-ramp to westbound I-90 to make room to widen the freeway.


May 2007 - Crews sawcut the pavement along the north side of the westbound I-90 lanes. We are widening the freeway on the right side, but the new HOV lane will be on the left side. We'll shift the lanes when we finish the widening.

May 2007 - We're building this retaining wall so we can widen the Bellevue Way HOV ramp to two lanes.


May 2007 - Crews install timber between metal posts to form a retaining wall (see photo above).


May 2007 - A worker stands on the concrete that was poured into the shaft after it was inserted in the ground (see photos below).


April 2007 - Crews assemble a cage of steel reinforcing bars. They will lower the cage into a shaft they've drilled, and will pour concrete around it. This is part of the construction of the new westbound HOV ramp at 80th Ave. SE on Mercer Island.


April 2007 - These large steel rings are part of the reinforcement cage for a ramp shaft (see photo above).


April 2007 - Looking down from the 80th Ave. SE bridge near the Mercer Island park-and-ride. We've cleared the I-90 median to make room for construction of the new westbound HOV lane and exit ramp. The reversible center roadway is on the right.