Roadway lighting and photometric design

A good lighting design meets the governing standard without putting more poles and wattage in the ground than the corridor needs. We design new roadway and intersection lighting and check proposed or existing layouts against a jurisdiction's criteria, from a civil engineer's point of view: what is practical to build and maintain, not just what calculates.

What you get

• Photometric plans

  Iso-illuminance lines across the roadway, so a reviewer can read the coverage at a glance.

• Luminaire summary

  Every fixture in the design, with the light loss factors applied in the calculations.

• An efficient design and an alternative

  The fewest fixtures or the lowest wattage that still meets the standard, plus a second option, each with its own summary calculations.

• Luminaire selection and pole placement

  Coordinated with the roadway, the sidewalk, and the utilities already in the ground.

• Electrical distribution plans

  For new lighting systems.

• Compliance checks

  Of proposed or existing layouts, including lighting analysis for development applications.

Experience

Lighting analysis and compliance checks against PBOT, ODOT, and City of Beaverton standards, with photometric plans, fixture and light loss factor summaries, and an efficient design alongside an alternative. The same photometric approach answers both questions a client asks: how to light a new corridor, and whether an existing layout still meets the current standard.

Standards and software

PBOT, ODOT, and City of Beaverton lighting standards, with AASHTO and IES guidance and the requirements of the local agency. Calculations in AGi32.