PA Turnpike – Southern Beltway SR 576

PA Turnpike – Southern Beltway SR 576, Washington & Allegheny Counties, Pennsylvania

LOCATION

Washington & Allegheny Counties, Pennsylvania

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%

Project Description

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.

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