Constructed 1.82 miles of new four-lane concrete highway including an interchange, a 259 lf two-span prestressed PA bulb-tee beam bridge, a 685 lf three-span continuous composite steel bridge, dual 1015 lf four-span continuous composite steel bridges, and a 9′ x 9′ concrete box culvert.
PA Turnpike – Southern Beltway SR 576
Washington & Allegheny Counties, Pennsylvania
Project Description
Project Highlights
- 3,450,000 cy excavation, Class 1, 1B, and 2
- 145,000 cy selected borrow rock Type B
- 13,200 cy foundation mine grouting
- 1,183 individually drilled 7″ diameter bore holes (average depth 78.8′, maximum depth 168′)
- 92,650 lf drilled grout injection bore holes
- 162,000 sy subbase, 6″ depth (No. 2A slag)
- 99,500 sy Long-Life Concrete Pavement , 12″ depth
- 371,000 sy Superpave Asphalt Materials (base, binder, & wearing course)
- 99,000 sy cement treated permeable base course
- 38,000 lf drainage pipe (various types and sizes)
- 336 inlets, endwalls, and manholes (various types and sizes)
- 12 post-construction storm water ponds totaling 4.35 acres
- 680 lf post-tensioned 9′ x 9′ concrete box culvert
- 6,611,339 lb fabricated structural steel
- 610,638 lb reinforcement bars
- 2,554,593 lb epoxy coated reinforcement bars
- 19,200 lf steel beam bearing piles
- DBE percentage required & attained: 13%