Item 5North Kimball AveStreet Widening (From SH 114 to Dove Road)
North Kimball AveStreet Widening
Proposed Construction Project
Phase I Construction
Funding
Landscaping
Street Lighting
Discussion
Location Map
Phase 2
Phase 1
Gateway Church
Kirkwood
North Kimball Ave
Engineer’s Opinion of Probable Construction Cost
Total Project
$7,000,000 (Entire Project)
Phase I
$4,000,000 (Construction + ROW Acquisition)
Requires water line improvements
Includes earthwork, wall construction and creek crossing
$1,135,000 – Current CIP funds budgeted
$2,865,000 - Funds needed FY 2010 CIP
Arterial RoadwayTypical Section
Arterial RoadwayPhase I Construction
Arterial RoadwayLandscaping
Urban Design Palette
Arterial RoadwayStreetlight Selection
Items to Consider
AASHTO criteria for arterial street lighting coverage is 1-foot candle average light on pavement
Pole height
Spacing
Wattage
Street vs. Pedestrian-scale lighting
Installation and Maintenance Costs
Service Costs
Establish Arterial Lighting Standard
Gullwing
Standard Shoebox (Rectangular or Round)
Decorative (Not Recommended for Kimball Project)
Items to consider
Spacing to achieve 1 foot-candle (standard lighting measure) on the pavement:
Pedestrian scale decorative street light poles spaced at 50’ on each side of the parkway requires 200+ poles
Standard street light poles (Gullwing, Shoebox) spaced at 200’ in the median requires 30 poles
Standard street light poles (Gullwing, Shoebox) spaced at 200’ on each side of the parkway requires 60 poles
Additional Issues
Standard street lights are directed to the pavement with limited spillover to adjacent property
Decorative street lights spread light 360 degrees causing spillover to adjacent properties
Questions?
Gullwing
Standard Shoebox (Rectangular or Round)
Decorative
Similar to Southlake Town Center parking lot lighting
Installation and Maintenance
Currently not included in Retail Electric Provider’s standard inventory
Retail Electric Provider will install for additional cost and maintain at no additional cost
Service Costs
City is responsible
Least expensive (similar to Option 2)
Lighting Coverage (1-ft candle light average)
Pole height: 30-40’
Spacing: 150-250’
Wattage: 400 W (HPS)
Street Lighting
PROS
Primary light source is inexpensive
Minimizes potential for “hotspots”
Average 1 foot-candle light coverage with standard pole spacing
CONS
Currently not included in Tri-County or ONCOR’s standard inventory
Similar to Byron Nelson Parkway street lighting
Installation and Maintenance
Included in REP’s standard inventory
REP will install and maintain at no capital cost to the City
Service Costs
City is responsible
Least expensive (similar to Option 1)
Lighting coverage (1-ft candle lighting average)
Pole height: 30-40’
Spacing: 150’-250’
Wattage: 400 W (HPS)
Street Lighting
PROS
Primary light source is inexpensive
Minimizes potential for “hotspots”
Average 1 foot-candle light coverage with standard pole height and spacing
Included in REP’s standard inventory
CONS
Aesthetics
Similar to SH 114 intersection lighting at Kimball, Carroll and White Chapel
Installation and Maintenance
Included in REP’s standard inventory
REP will install and maintain at no capital cost to the City
Service Costs
City is responsible
Most expensive
Lighting coverage (1-ft candle lighting average)
Pole height: 16-20’
Spacing: 40-50’
Wattage: 250 W (HPS)
Pedestrian-scale lighting
Pedestrian-scale Lighting
PROS
Included in REP’s standard inventory
Aesthetics
CONS
Pedestrian scale only, not intended for arterial roadway lighting
Possible “dark spots” on inside turn lanes
Possible “visual clutter”
Spill-over to adjacent property
Pole spacing to meet 1-ft candle coverage is 3-5 times the spacing for Options 1 and 2
Service costs