Highway 290 - Houston, TX
In this critical path outage at an on ramp bridge between Highway 290 and the Beltway, DH Griffin Construction removed the ramp deck and bridge girders. Bluegrass then moved in to do the concrete cutting.
The first step was removing the center potion of the bent cap in order to decrease the overall weight. We ran two saws simultaneously, while two cranes were positioned to hold the cap in position. In 4 hours the 70 ton (140,000 lb.) section was released and the cranes lowered it to the ground.
The cranes then hoisted into position our 60” frame underwater wire saw, and we attached that to the vertical column. Our patented 4 wheel drive technology pushed the diamond wire through the concrete, cutting the joint where the cap rested on the column. That cut took 3 hours, yielding a reusable concrete column and a 35-ton chunk of concrete which the cranes lowered to the ground.
OUTCOME: In a shift and a half, Bluegrass had mobilized to make 3 cuts, released 105 tons of concrete, and left the columns intact and ready to be reused under the replacement bridge.
In this critical path outage at an on ramp bridge between Highway 290 and the Beltway, DH Griffin Construction removed the ramp deck and bridge girders. Bluegrass then moved in to do the concrete cutting.
The first step was removing the center potion of the bent cap in order to decrease the overall weight. We ran two saws simultaneously, while two cranes were positioned to hold the cap in position. In 4 hours the 70 ton (140,000 lb.) section was released and the cranes lowered it to the ground.
The cranes then hoisted into position our 60” frame underwater wire saw, and we attached that to the vertical column. Our patented 4 wheel drive technology pushed the diamond wire through the concrete, cutting the joint where the cap rested on the column. That cut took 3 hours, yielding a reusable concrete column and a 35-ton chunk of concrete which the cranes lowered to the ground.
OUTCOME: In a shift and a half, Bluegrass had mobilized to make 3 cuts, released 105 tons of concrete, and left the columns intact and ready to be reused under the replacement bridge.