AI is performing safety inspections of highway structures and bridges as well as support structures for traffic devices in the Fredericksburg District, VA. The scope of this contract included routine and fracture critical bridge safety inspections, traffic control device inspections, bridge load capacity analysis, and special inspections. AI performed approximately 320 safety inspections of bridges and over 1,800 safety inspections of ancillary structures under this contract. Additionally, AI performed 34 load ratings, including the load rating of the Robert O. Norris Bridge (Route 3 over the Rappahannock) including analysis of its 480 gusset plates. This project consisted of a wide range of structures, including major structures with trusses and pin and hanger assemblies and fracture critical members. The work also included CSX and Norfolk Southern Railroad coordination, ultrasonic testing, and underwater inspections. A wide variety of equipment was utilized to perform this inspection work. AI used multiple 62-foot UBIT snoopers, a 60-foot Elliott Hi-Reach man-lift, a 65-foot bucket boat, pontoon boats, safety boats, rigging, and bucket trucks to complete this assignment. The Fredericksburg District includes a large section of the I-95 corridor with high ADT and complex MOT setups. Our team leaders are very familiar with the Virginia Work Area Protection Manual and Virginia’s Supplement to Manual on Uniform Traffic Control Devices (VA MUTCD). They have attended the Intermediate Work Zone Traffic Control Training are very familiar with the required truck-mounted attenuators, cones, and signage for all types of MOT setups. 

The inspection reports include the CoRE element condition state data as well as the new BrM National Bridge Element data, component ratings, bridge inspection and inventory information, vertical clearance or channel profile sheets, structural deficiency detail sketches, repair recommendations, and photographs. We routinely prepare VDOT’s Bridge Signage, Preventative Maintenance, Priority Repair, and Critical Finding forms when applicable. Inspection reports were submitted in electronic format within 30 days of the last inspection date. Monthly updates of inspections completed were submitted to VDOT, and critical findings were issued at the time of inspection. We have on-staff supervisory-level OSHA-certified and ATSSA-certified personnel who periodically monitored safety compliance during field operations. The project team consisted of experienced bridge/structural engineers and senior staff to perform QC/QA of the field operations and reports.

Highlights 

  • Client: VDOT
  • Duration: 2012 - Present
  • Project Scope:
    • NBIS inspection
    • NBIS guidelines
    • Fracture critical inspections
    • Traffic devices
    • Load rating
    • Underwater inspections
    • Railroad coordination
    • BrM elements
    • MOT
    • Nondestructive evaluation
    • Critical findings
    • Repair recommendations