Street Lighting Standards

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Street Lighting Contractor Guide

Section 1. Applicability of Guidelines

These guidelines apply to all new street lighting systems, and retrofitted lighting systems where practical, within the City of Loveland. Loveland Water and Power shall design and construct all new street lighting systems. Loveland Water and Power manages and stocks all parts and equipment for our approved streetlights. Loveland Water and Power designs and installs all streetlights for the City of Loveland. 

Section 2. Street Classifications

All City streets can be classified as arterial, collector, or local streets. Arterial streets are defined as that part of the street system which serves as a city's principal network for through-traffic flow. Collector streets are defined as those streets carrying through-traffic between major and local streets. Local streets are mostly residential and do not carry through-traffic.

Loveland streets are designated arterial, collectors, and locals as defined by the Community Services Street Design Planning Standards listed below. Loveland's standard lighting systems are listed in Section 3 according to these Street Classifications. The appropriate Street Classification is determined from the Street Land Use Map.

 Street Classification  Design Speed  Minimum Street Width
 Major or Minor Arterial  50-55 mph  58-88 feet
 Major Collector  35-40 mph  38-44 feet
 Minor Collector  30 mph  36-44 feet
 Local  20-25 mph  28-34 feet


Section 3. Lighting Systems Descriptions

These lighting standards apply to all new lighting systems. The refractor style cobra with a Type-3 distribution pattern mounted on direct buried fiberglass poles is the standard construction for collector and arterial streets. An decorative fixture with a Type-3 distribution mounted on direct buried fiberglass poles will be used on residential streets.

When appropriate, poles or luminaries that are equivalent to those described below may be substituted at the discretion of the Power Operations Manager or designee.

Street Classifications  Lighting System
 Major Arterial 400-W Cobra
Fiberglass Pole
38-foot Mounting Height
 Minor Arterial 250-W Cobra
Fiberglass Pole
32-foot Mounting Height
 Major Collector 150-W Cobra
Fiberglass Pole
32-foot Mounting Height
 Minor Collector 70-W Decorative
Fiberglass Pole
15-foot Mounting Height
 Local Residential and New Residential 70-W Decorative
Fiberglass Pole,
15-foot Mounting Height

Section 4. Street Lighting Spacing Guidelines

The spacings listed below are based on staggered, opposite, or one-sided layout patterns. Refer to sketches at the end of the document. All spacings are based on providing maintained light levels that include a light loss factor of 0.81. This factor accounts for dirt depreciation, which is the loss of light due to dirt accumulating in the luminaire over time, and lumen depreciation, which is the loss of light output of the lamp as it ages.

Applying the Guidelines to Cobra Luminaries

Whenever possible, cobra luminaries will be located directly over the curb. This can be accomplished in most situations by using a mast arm between 4 and 8 feet long. In some cases, physical constraints or conflicts with existing underground utilities may require a greater setback from the street.

The decorative luminaries should be set back within six (6) feet from the curb, if possible. Physical constraints or existing utilities may require a greater setback.

Street Lighting Spacing Guidelines

60-90 feet curb-to-curb width

 Major Arterial  Staggered Layout
 Luminaire  Spacing Mounting Height 
 400-W Cobra  120-150 feet  38 feet

40-75 feet curb-to-curb width

 Major Arterial  Staggered Layout
 Luminaire  Spacing Mounting Height  
 250-W Cobra  150-175 feet  32 feet
38-44 feet curb-to-curb width

 Major Collector  Staggered Layout
 Luminaire  Spacing  Mounting Height
 250-W Cobra  150-175 feet  32 feet

36-44 feet curb-to-curb width

 Minor Collector  Staggered Layout
 Luminaire Spacing Mounting Height
 70-W Decorative 160-200 feet 15 feet

28-34 feet curb-to-curb width

Local Residential New Subdivisions  Staggered Layout
Luminaire Spacing Mounting Height
70-W Decorative 160-200 feet 15 feet

Local Residential Streets

Local residential streets are lit with two different types of lighting systems: the post/porch lighting system, and the posttop system. The "posttop system" refers to the 70-watt acorn fixtures on fiberglass poles.

The post/porch lighting system exists in the older parts of Loveland that do not have other lighting systems. This system is based on the post/porch lights being unmetered so that the City pays the cost of operating the lights. The post/porch lighting system is designed to light driveway entrances and sidewalks while producing minimal glare to residents. This system has been installed in previously developed areas of the City and is not available in new developments.

The 70-watt posttop system should be used for new local residential streets adjacent to, and within, land under development.

Street Lighting Pattern Convention

Two types of patterns can be found in this guide: one-sided, staggered, and opposite spacing. The two arrangements shown below show the one-side and opposite conventions.

Street Lighting Pattern Convention