BL Companies provided design and construction inspection services for the rehabilitation of the Richmond Hill Avenue Bridge which spans 102-feet over the Rippowam River. The design consisted of a full superstructure replacement, substructure repairs, and scour countermeasures. A continuous superstructure system was utilized to eliminate the deck joint over the center pier. Concrete spalling and cracking at abutments, wingwalls and piers were also repaired. Installation of the scour countermeasures was completed in two stages to provide access for installation at the center pier while maintaining an adequate hydraulic opening for temporary conditions.
BL Companies provided land surveying and mapping, environmental services, preliminary engineering studies, preliminary and final design, permitting, bidding phase services, shop drawing review, full time construction administration and inspection and consultation during construction. These services included bridge type studies, geotechnical investigations, boring plans, wetlands evaluations, roadway detour plans, roadway cross sections and details, hydraulics and drainage, scour analysis, utility coordination, and the design of pavement markings and signage.
The construction administration and inspection included providing a full-time resident engineer/chief inspector in addition to technical, clerical and administrative support in accordance with CTDOT Construction Inspection requirements. The construction engineering and inspection included construction survey, material testing, development and maintenance of project records, monitoring of traffic control, coordination and liaison, plan review, environmental monitoring and construction certification.