Line Structures
The Backbone of Our System
We all know how important it is to maintain highways, bridges, and tunnels. Line structures—subway tunnels, elevated structures, viaducts, and railroad bridges—are the transit system's equivalent, and the backbone of our system. Just like roads, bridges, and tunnels, line structures are extremely vulnerable to water damage, corrosion, and normal wear-and-tear.
The MTA is currently rehabilitating two major line structures for a total cost of over $510 million. Repairs to the Atlantic Avenue Viaduct include replacing girders, beams, bracing, and the upper portion of street columns supporting the structure, while repairs to the Culver Viaduct include replacing all four tracks, repairing and waterproofing the concrete deck that supports the tracks, and installing new track drains.
Learn more about
- Infrastructure
- Signals, Track & Interlockings
- Line Structures
- Pumps
- Communications
- Power
Did You Know?
The Culver Viaduct's Smith and Ninth Street Station on the
and 
is the highest subway station in the world.
