Metro-North Railroad


Orange County, NY


Rail Transportation: Line Segments & Tunnels


Planning/Pre-Design: Conditions Assessment/Surveys

Design: Civil Engineering, Structural Engineering

Moodna and Woodbury Viaducts Rehabilitation

A pair of viaducts carrying trains for more than a century across forested valleys west of the Hudson River were showing their age. Metro-North Railroad selected STV to inspect the trestles, calculate load ratings, develop a list of the most urgent repairs, and prepare designs and cost estimates. Both viaducts carry commuter and freight trains.

One of the structures, the picturesque 3,200-foot-long Moodna Viaduct, towers 193 feet above the Moodna Creek Valley, and is the highest and longest railroad trestle east of the Mississippi River.

The firm provided in-depth structural inspections, calculated live load ratings, developed a priority ranking of the recommended repairs, and prepared preliminary and final designs. STV provided construction support services for the repair of the Moodna Viaduct and resident engineering and inspection (REI) services for structural repairs to the Woodbury Viaduct.

Award Icon Project Recognition

2016 Engineering Excellence Award - Structural Systems
American Council of Engineering Companies of New York