DOT Highway Cable Tray Raceway – Durable Cable Management for Transportation

Highway infrastructure demands rugged, code-compliant cable management that installs quickly and performs for decades. Our DOT-focused cable tray solutions provide safe, organized routing for power, lighting, and fiber/communication runs across bridges, overpasses, and tunnels—supporting Intelligent Transportation Systems (ITS), traffic signal networks, CCTV, message signs, and roadway lighting.

Why Cable Tray for Highways?

• Rapid install & access: Open-tray architecture speeds installation and maintenance compared to continuous conduit.
• Future-ready capacity: Simplifies additions for new devices, fiber upgrades, and lane expansion projects.
• Thermal performance: Ventilated designs aid heat dissipation for high-load power and dense data bundles.
• Lower total cost: Reduces fittings, pull points, and field labor while maintaining robust support.

Built for Bridge & Tunnel Environments

• Corrosion resistance: Material options for de-icing chemicals, salt spray, and humidity (galvanized steel, aluminum, FRP).
• Weatherability: UV-stable finishes and optional covers for debris and splash protection.
• Dynamic loads: Bracketry and hardware designed for vibration, wind, and traffic-induced movement.
• Drainage & cleanliness: Ladder and ventilated trough styles shed water and debris to protect cable jackets.
• Thermal expansion: Expansion splice plates and guided supports accommodate temperature swings on long bridge runs.

Standards & Compliance

Systems are engineered to meet applicable project specifications and prevailing codes for transportation infrastructure. Options are available to support:

• State DOT specifications and typical details
• Applicable sections of the National Electrical Code (NEC) for cable support
• NEMA VE guidelines for tray construction and installation
• Buy America / Build America (BABA) material sourcing options upon request

Note: Final compliance is project-specific. We provide submittals, load tables, and cut sheets aligned to your DOT’s requirements.

Highway Applications

• Bridge, overpass, and viaduct cable routing (exterior girder, under-deck, or inside box girders)
• Tunnel power and communication distribution with covered trays
• ITS backbones: CCTV, traffic sensors, ramp metering, DMS, and emergency phones
• Roadway and architectural lighting circuits
• Fiber runs between cabinets, hubs, and field devices

Tray Types & Configurations

• Ladder Tray: Highest strength-to-weight; ideal for long spans and heavy bundles.
• Ventilated Trough: Added cable support with airflow to manage heat and moisture.
• Solid-Bottom: Enhanced shielding and debris protection; commonly paired with covers in tunnels.
• Covers & Accessories: Bolt-on or quick-release covers, drop-outs, splice plates, hold-downs, and barrier dividers.

Typical materials and finishes include hot-dip galvanized steel, aluminum, and fiberglass-reinforced polymer (FRP). Widths commonly range from 6–24 in (150–600 mm) with depths from 3–6 in (75–150 mm). Custom sizes are available.

Mounting & Support Hardware

• Girder, web, and flange brackets for bridge structures
• Wall and soffit brackets for tunnels and underpasses
• Standoff and corrosion-isolating hardware for mixed-metal assemblies
• Seismic restraints and vibration-damping options where specified

How to Specify

1. Tray type & material: Ladder / trough / solid-bottom; galvanized steel, aluminum, or FRP.
2. Dimensions: Width, side rail height, and rung spacing; include allowable fill and future capacity.
3. Load rating & span: Define uniform load and support spacing (e.g., 10 ft spans).
4. Environment & finish: Coastal/salt, de-icing exposure, tunnel humidity; specify coating/finish and covers.
5. Accessories: Expansion joints, drop-outs, splice type, dividers, identifiers, and bonding/grounding hardware.
6. Compliance: Cite project DOT spec sections and submittal requirements; request BABA/Buy America as needed.

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