Premium Transit Network Columbia Pike Transit Stations Update Presented to County Board May 31, 2016
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Today’s Goals • Provide update on Transit Stations • Should Staff continue to explore a prefabricated shelter construction option?
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Transit Station Goals
• Gateway to the Premium Transit Network • Transform Columbia Pike into a vibrant, walkable “Main Street” • Accommodate ridership on Virginia’s busiest bus corridor • Support attractiveness and reliability of transit • Support redevelopment pipeline for next 10 years
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Phased Station Construction
*Phase 2 will include westbound stops only at Oakland and Barton
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Phased Station Construction • Timeline (calendar years) – Design: 2016 to 2018
– Construction: 2018 to 2021
• Columbia Pike street improvements, utility undergrounding and transit stations are interdependent • Streetscape work should be ~75% complete before installation of transit stations – Utility relocation, platforms, curbs 5
Construct-in-place Station Design
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Construct-in-place Station Design
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Transit Station Comparison • Example prefab shelter used for cost comparison • Selection of prefab shelter design would require public engagement
Rendering of proposed construct-in-place shelter (kit of parts)
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Transit Station Comparison Feature
Kit of Parts (Current Ridership)
Kit of Parts (Future Ridership)
Prefab
Hybrid (Mix of kit of parts and prefab)
Public engagement Durability
Placemaking Size/scale Schedule
Budget Annualize Cost Capacity 9
Constructability Review • Versar Brinjac conducted constructability review of kit of parts design – Independent third-party review by international construction management, architecture and engineering firm
• Methodology – Reviewed 100% civil, structural and electrical design – Reviewed Columbia Pike street improvements and utility undergrounding design – Conducted site visits
• Conclusion: “Constructable without significant foreseeable risk or requiring extensive mitigation” 10
Staff Recommendation • Pursue construct-in-place/kit-of-parts design – Ensures durability, strong placemaking for Columbia Pike, high quality, and accessibility – No discernible difference in schedule
• Closely coordinate Columbia Pike street improvement, utility undergrounding and transit station construction • Next steps: – Update community and obtain feedback – Return to County Board in July for decision
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Appendices
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Construct in Place: Kit of Parts Design “Master templates” – sized for variation in space constraints and ridership
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Transit Station cost comparison Construct-in-Place
Prefabricated (3)
Description (2)
23 stations with constructin-place shelters with sizes optimized for current ridership
23 stations with custom, prefabricated shelters – one or two shelters per station depending on current ridership
Implementation Cost (1)
$12,154,000
$8,560,000
Per station construction cost (excl. professional costs)
$208,000 - $536,000
$208,000 - $364,000
Shelter construction / installation cost per station
$87,000 – $334,000
$78,000 – $162,000
Useful life
80-100 years
20-25 years
(1) Implementation costs for both options incorporate professional costs, including costs to date on current design. (2) Platform and curb construction included in project cost for Phase 2 stations. For Phases 3-6, platform and curb construction is in the Columbia Pike Multimodal project scope and budget. (3) Cost various based on location and size of stations (4) Estimates for prefabricated option are based on 25’ x 10’ shelter manufactured for Columbus, Ohio, as depicted on slide 10. Ultimate selected shelter design may vary in appearance and cost.
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Transit Station Comparison Feature
Construct-in-place
Prefabricated
Public process
Presented to Board & community
None to date
Durability
Up to 50 years
Up to 25 years
Design/ Placemaking
Unique, locally significant
High-end possible, but not unique; accessibility issues
Size/scale
Can be sized based on ridership & existing physical constraints, greater accessibility
Fit within physical constraints unknown without further design
Schedule
No discernible difference
No discernible difference
Cost
$12,154,000
$8,560,000
Maintenance
More expensive to replace component parts if damaged
Less expensive to replace prefab parts 15