Site work and outdoor lighting for a road / highway in Helena, Montana. Completed plans call for outdoor lighting for a road / highway.

The Montana Department of Transportation (MDT) is accepting bids for Replacing High Pressure Sodium Luminaires with LED Luminaires Flathead Reservation. Questions or information relating to either specifications or requirements of this Invitation for Bid shall be asked through Electronically The project will be let in the spring and should be completed by June 2022. Provide all labor, materials, equipment, traffic control and incidentals necessary to replace all non-LED Luminaires with LED luminaires manufactured by American Electric Lighting, Cree, General Electric, Leotek, or Philips-Lumec and meeting these specifications. WORK IS REQUIRED TO BE COMPLETED ON OR BEFORE: OCTOBER 15, 2023 Provide LED luminaires with aluminum housing and universal 4-bolt slip fitter mount. Provide luminaires utilizing discrete component LEDS - chip-on-board (COB) LEDs will not be accepted. Provide luminaires with standard roadway type 2 distribution. Provide luminaires with options for house-side and light trespass shields, but do not supply any shields. Provide luminaires that have an uplight rating of U1 or less. Provide luminaires with an LED optical assembly that has an ingress protection rating of IP66. Use a correlated color temperature (CCT) of 4000 K and a minimum color rendering index (CRI) of 70. Use LEDs that are mercury and lead free. Use LEDs rated to produce a minimum of 90% intensity at 100,000 hours of life based on IES TM-21 (L90). Provide a power supply with a minimum power factor of .90 and a maximum total harmonic distortion (THD) of 20% or less. Provide surge protection with a minimum of ANSI/IEEE C62.41 category C protection. Provide luminaires that allow access to electrical components without the use of tools. Provide luminaires that are UL listed for use in wet locations. Provide luminaires with input voltage configurable between 120- and 277-volts AC. Install the luminaires configured for the existing lighting circuit voltage.