The government authority in Arlington, VA invites qualified contractors to provide boulevard improvement services focused on duct bank assembly, concrete works, and comprehensive site restoration.

Key tasks will include assembling the spacers and ducts for the duct bank, ensuring spacers are installed at intervals sufficient to prevent sagging and deformation, with a minimum of five spacers per 20 feet of duct. Contractors must secure spacers effectively and carry out concrete pours in a single continuous operation between termination points, allowing for thermal expansion and contraction of the ducts. Careful concrete placement is required to avoid voids, with procedures in place to ensure an even fill and protection of conduits.

Additional specifications require using trench walls for formwork where possible, and, where not feasible, installing appropriate forms to prevent soil inclusion. All conduit terminations into structures must be watertight and designed to withstand non-uniform loads. Upon completion of duct bank installation, contractors are responsible for restoring the site to its previous grade, including restoration of curb, gutter, pavement, and other affected surfaces as needed.