presentation for feb 27 board ne 130th street infill ......67 3odq hvwlpdwh 0 8sgdwhg hvwlpdwh 0 67...
TRANSCRIPT
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NE 130th St Infill StationBoard of Directors
February 27, 2020
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Provide information for Board consideration
• Highlights from System Expansion Committee (SEC) meetings in January and February
• SEC recommendation to the Board
• Respond to questions
Goals for today
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Overview
• Timing in ST3 Plan - start 2024, open 2031.
• Along Lynnwood Link Extension alignment in North Seattle
• Side platform with 3400 average weekday boardings
• Challenges with infill construction timing
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System Expansion Committee review
Presentations on January 9 and February 13, 2020
• Infill construction impacts• Updated cost estimate • Financial effects • PE results: Integrated design and construction packages• Options for construction timing • SEC recommendation – Advance progressively
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Impacts of infill construction (ST3 plan timing)
Over 60k daily riders affected, nearly 90% from Snohomish and North King subareas• Potential system-wide delays could
affect many more riders
• Service delays due to single-tracking
• Restricted construction window –nighttime construction and higher cost
• Repeated neighborhood impacts
• Choices and trade-offs
• Insight from Connect 2020
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Project cost estimate has increased (2018$)
ST3 Plan estimate: $72M Updated estimate: $174M
• ST3 estimate based on early LLE estimate, then available• Market conditions• Updated Design Criteria Manual requirements• Better understanding of site constraints
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Effect on debt capacity
"Pinch point" -$6M or 0.2% decrease in
debt capacity
$-
$5
$10
$15
$20
$25
2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041
Bill
ion
s of
YO
E$
Change in Debt Capacity
Principal Balance - 130th ST3 Timing
Principal Balance - 130th Early Full Build
Total Debt Capacity
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Preliminary Engineering design
Integrated structure performs better than two separate structures
• Better customer experience, safer• Improved seismic performance• Reduced monitoring and maintenance• Consistent with other ST station designs• Likely lower construction cost• Easier to build
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Preliminary Engineering design
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Construction packages
Package 1 (foundation/guideway)Package 2 (platform/canopy)Package 3 (plaza/finishes)
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Options presented to SEC1. No further work, return to original ST3 Plan schedule2. Advance incrementally
• Complete final design of entire project• Complete construction of foundation/guideway and
platform/canopy packages• Determine timing for final construction package
3. Advance fully• Complete final design of entire project• Complete construction of all packages• Open ~2025
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Options presented to SEC1. No further work, return to original ST3 Plan schedule2. Advance incrementally progressively
• Complete final design of entire project• Complete construction of foundation/guideway and
platform/canopy packages• Staff to provide financial, operational and construction info• Determine timing for final construction package
3. Advance fully• Complete final design of entire project• Complete construction of all packages• Open ~2025
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System Expansion Committee recommendation
Advance progressively
• Advance the schedule for completing final design and complete construction of the first construction package for an integrated station (station foundation and structural support).
• In Q2 2021 after final design is complete, staff would return with all financial, operational and construction information so the Board can determine whether to authorize the second or both the second and third construction packages.
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Recommended Board actions
SEC recommendation to advance progressively
• Action 1: Approve implementation approach to Advance Progressively
• Action 2: Amend project budget, authorize final design
• Action 3: Authorize CEO to amend contracts
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Questions?
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NE 130th Street Infill StationResolution No. R2020-01 and Motion No. M2020-14
February 27, 2020
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NE 130th STREET INFILL STATION: Authorized Project Allocation $6.8MALLOCATION $ COMMITMENTS
Illustrative - Not to Scale
Approved Today’s Action Future Action
F/D
& C
onst
ruct
ion
Pjt
Dvt
.
$6.8
M
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Illustrative - Not to Scale
Approved Today’s Action Future Action
ALLOCATION $ COMMITMENTS
Pjt
Dvt
.28.9
M
NE 130th STREET INFILL STATION: Board Approves $22.1M Increase to Authorized Project Allocation (R2020-01)
F/D
&
Cons
t.Co
nstr
uctio
n
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Illustrative - Not to Scale
Approved Today’s Action Future Action
ALLOCATION $ COMMITMENTS
Cons
truc
tion
Pjt
Dvt
.F/
D &
Co
nst.
$28.
9M
NE 130th STREET INFILL STATION: Board Approves $20M Increase to Contractsand Agreements (M2020-14)
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Thank you.
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