Amtrak Sawtooth Bridge ReplacementsAmtrak Sawtooth Bridge Replacements

Project Description

The Sawtooth Bridges in Newark, New Jersey were originally built in 1907 and form part of a heavily used rail corridor. The replacement program is intended to renew the aging structures and add two tracks, supporting continued safe and reliable passenger rail service through the area.

TULLOCH supported engineering design with an engineering-grade mobile LiDAR and topographic survey program. Using a RIEGL VMX-2HA system mounted to a hi-rail vehicle, our team collected corridor data along PATH’s north and south tracks, supplemented by mobile LiDAR of adjacent roads and conventional fill-in surveys for obscured and drainage features.

The survey data was used to map track, overhead catenary system infrastructure, utilities, terrain, and other corridor features, culminating in engineering survey base plan and profile drawings for design.

Scope of Services

• Engineering-grade mobile LiDAR collection from a hi-rail vehicle along PATH north and south tracks
• Mobile LiDAR surveying of adjacent roadway areas
• Fill-in topographic surveys for obscured and drainage features
• Mapping of track, track features, overhead catenary systems, and utilities
• Digital terrain model and contour generation from LiDAR point clouds
• Engineering survey base plan and profile drawings