The aging infrastructure in the United States is a concern faced by all government agencies. To maximize the benefit of taxpayer dollars, the inspection of structures are primary tools utilized to determine whether a structure can undergo minor repair to extend its useful life or whether a structure needs to be replaced.
Infrastructure Engineers is recognized across the nation as a leader in structural inspection. Our professional staff provides a wide array of structural inspection services for bridges, waterfront facilities, ancillary highway structures, and water tanks. Each of our inspectors receives specialized training from the Federal Highway Administration and various national agencies to provide superior service. At Infrastructure Engineers, we understand the importance of an efficient and thorough inspection. That is why much of our equipment, including our trucks and boats, is custom-made. This benefits our clients by making the inspection teams more efficient in the field. Our structural inspection services include the following:
• Rope access inspection (climbing)
• Confined space inspection
• Fracture critical inspection
• Load rating
• Non-destructive testing
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NBIS Bridge Inspection Services Worldwide, United States Navy
For three consecutive indefinite delivery-indefinite quantity contracts, Infrastructure Engineers has performed the NBIS inspection of US Navy bridges worldwide. Project locations have included the United States, Spain, Australia, Cuba, Guam, and Japan. This project includes routine, fracture critical and underwater inspections, each of which requires the preparation of an engineering report describing the condition of the structure and recommending maintenance and repairs. Rope access techniques are used to provide hands-on inspections for bridges. Load ratings are prepared on most bridges to include accommodating specialized military transport vehicles.
NBIS Structures Inspection – Northern System,
Florida’s Turnpike Enterprise
Infrastructure Engineers has performed NBIS structures inspections for the north system of Florida’s Turnpike under five consecutive two-year contract cycles. Services include the inspection of 400+ bridges, two of which require a snooper for access; 300+ overhead sign structures; 200+ high mast light towers; and 45+ large non-qualifying culverts. Inspections include biennial routine, fracture critical, initial, post rehabilitation/repair, underwater, and interim bridge inspections. Bridges with significant deterioration require load rating analysis. A comprehensive Pontis report of all deficiencies, including photographs, for each structure is provided.
Butler County Local Government Bridge Inspections, PennDOT District 10-0
Under a contract with PennDOT District 10-0, Infrastructure Engineers is performing the NBIS routine and fracture critical inspection of 143 local government bridges in Butler County, Pennsylvania. Structure types include concrete, steel, and timber bridges over roadways, waterways, and dams. The project includes rope access inspections and railroad coordination. The inspection reports include Structure Inventory & Appraisal (SI&A) report update, scour evaluation, prioritized maintenance recommendations, and a revised load rating when required.
Oklahoma Off-System and On-System Truss and Fracture Critical Bridge Inspections,
Oklahoma Department of Transportation
Under multiple contracts since 2010, Infrastructure Engineers has provided statewide NBIS inspection services for off-system and on-system truss and fracture critical bridges. Access to the primary structural members and floor systems for the 175 off-system and 29 on-system bridges is often achieved without mechanical access equipment or traffic control, but by rope access techniques, ladders, and boats. Exposed substructure elements are probed and scour Plans-of-Action are prepared as needed. Inspections include non-destructive testing and are conducted in compliance with state, NBIS, AASHTO, and FHWA regulations.
Infrastructure Engineers provided the in-depth inspection of six fracture critical bridges over the Ohio River: the Irvin Cobb Bridge (5,388 ft. long); the Milton-Madison Bridge (3,181 ft. long); the Glover Cary Bridge (4,320 ft. long); the Simon-Kenton Bridge (2,866 ft. long); the John F. Kennedy Bridge (2,498 ft. long); and the Taylor Southgate Bridge (2,298 ft. long). The inspection team utilized industrial rope access techniques to minimize traffic disruption, as well as manlifts and a safety boat for portions over the river. We also performed a hands-on examination of fatigue sensitive details in the floor system, including all stringer-to-floorbeam connections; all floorbeam-to-truss vertical connections; welded cover plates, splice plates, stiffeners and cross-frame connections; and gusset plates attached to girder webs that are also attached to cross-frames, diaphragms or lateral bracing (Hoan-type details). Each inspection required a detailed report, as well as pre- and post-inspection meetings.
Ohio River Fracture Critical Bridge Inspections, Kentucky Transportation Cabinet
NBIS Bridge Inspections, County of Kauai, Hawaii
Infrastructure Engineers has been selected for three consecutive contacts to provide NBIS routine inspection of 25 bridges countywide, which included an underwater inspection for the Hanpepe Bridge and a fracture critical inspection for the Puuopae Bridge. Each inspection included the preparation of a comprehensive engineering report comprised of an executive summary, narrative description of findings, evaluation and assessment, recommendations, location maps, photographs, and NBI rating form and tables. The project also included load ratings and rehabilitation design.