The Harrisburg Authority
Combined Sewer Rehabilitation
BRINJAC ENGINEERING, Inc. (BRINJAC) has completed numerous projects for the Harrisburg Authority. In a recent contract, BRINJAC evaluated, designed, and oversaw construction for the rehabilitation/separation of existing combined sewers within the City of Harrisburg. BRINJAC also successfully assisted the Authority with a grant application to the Pennsylvania Infrastructure Investment Authority (PennVEST) for $4 million.

Many of the existing combined sewers in the City dated back to the mid-1800’s or early 1900’s and were constructed of brick and mortar or terra cotta. To prevent further collapse of the deteriorated portions and to alleviate overloading on the wastewater treatment facility during storm events, BRINJAC designed the replacement/separation of approximately 8,000 LF of existing sewer, ranging from 12 to 48 inches. Replacement sewer ranged from 12 to 60 inches and included reinforced concrete sewer line, installation of polymer resin liner, fusion-welded HDPE, as well as new manholes and inlets. The project covered portions of Second Street, Verbeke Street, Reily Street, Hamilton Street, Boas Street and Market Street, and bypass pumping was required during installation.
BRINJAC provided construction supervision during the installation of this polymer resin liner.