Access Granted

by Christopher W. Wright, P.E., (M.ASCE), Associate Vice President, Freight Rail Project Manager; AECOM, Philadelphia, PA,
Derek S. Mihaly, (A.M.ASCE), Public Projects Manager for the Northeast; CSX Transportation, Trevose, PA,

Serial Information: Civil Engineering—ASCE, 2018, Vol. 88, Issue 1, Pg. 52-59

Document Type: Feature article

Abstract: In southeastern Pennsylvania, CSX Transportation sought to increase the productivity of its Trenton Line freight rail service by improving the vertical clearance of its tracks so that it could operate double-stack container cars along the busy corridor. Investigations using technologies ranging from aerial and laser surveys to lidar, GPS equipment, ground-penetrating radar, and seismic refraction techniques helped determine the geotechnical conditions along the route and inform the resulting design. A combination of foundation support structures, protection slabs, and soldier-pile walls was used to protect the surrounding structures and utilities during the track-lowering process, which included both traditional and innovative excavation methods.

Subject Headings: Railroad trains | Seismic surveys | Seismic design | Light rail transit | Railroad tracks | Container shipping | Transportation corridors | Lasers | Pennsylvania | United States

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