BL Companies provided design services for two bridge structures located on an 85-lot, 125-acre residential subdivision in Farmington, Connecticut. The two structures span over brooks and wetland limits. One bridge consists of a 68-foot single span pre-cast concrete arch culvert, and the other bridge consists of a 65-foot single span structural steel bridge supported on concrete abutments and spread footings. Design services included structure type studies, hydrologic & hydraulic analysis, scour analysis, preparation of permit applications, utility coordination, coordination with proprietary pre-cast concrete arch culvert manufacturer, quantity and cost estimates, specifications, and preparation of construction plans.
BL Companies also provided construction administration and construction inspection services for the two structures. The construction administration and construction inspection services included inspection of every aspect of the bridge construction; survey verification of Contractor’s layout and elevations; review of shop drawings, working drawings, and catalog cuts; review of material test results; review of Contractor’s request for changes; consultation during construction; and utility coordination.