B. Thayer Associates provided MTA Metro-North Railroad with engineering inspection, reports, underwater inspection, and live load ratings of selected fixed undergrade railroad bridges located on Metro-North's Port Jervis Line. Four of the bridges were considered confined space and inspection was performed in accordance with all OSHA regulations. The scope of work included data collection, field inspection, underwater inspection of select bridges, live load ratings of select bridges, tabulation of results, and prioritization of the recommended repairs. B. Thayer Associates researched and reviewed the data for each bridge and conducted an in-depth inspection, sufficient to support the live load rating performance, of each bridge. Condition rating inspections were conducted on each bridge not requiring a live load rating. All elements of the superstructure and substructure were inspected, including columns, piers, and abutments. Engineering measurements were taken to determine the structure's size, thickness, and dead load weight. Underwater inspection was conducted at low-tide. Live load ratings were performed to determine each bridge's capacity to carry live load.

Port Jervis Line Undergrade Bridges Engineering Inspection

Location: New York, NY

Client: MTA Metro-North Railroad