design firm: clark patterson lee owner: erie county ......design firm: clark patterson lee owner:...
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Design Firm: Clark Patterson Lee Owner: Erie County
Contractor: Union concrete corp. Presenter: Jason Havens, P.E.
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Understand project feasibility based on three key components
Discuss significant design elements Present design solutions and value
engineering elements
Penora Street Bridge Rehabilitation - Jason Havens, P.E.
Project Location
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Schedule: • 1 construction season 1.1 Mile full depth reconstruction including new storm,
curb/gutter, pedestrian facilities, water main betterment, etc. Bridge rehabilitation (186ft) Negative impact to traffic, specifically students and buses
Budget:
• Total construction budget topped out at <$5M No other projects to bid by ECDPW No field changes or change orders
Permitting:
• Article 16 DEC floodplain management 100yr flood plain
Penora Street Bridge Rehabilitation - Jason Havens, P.E.
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Roadway Reconstruction – 1.1 Mile Rehabilitate Existing Bridge – 2 span steel girder w/ variable
wearing (168ft) Construction Budget = < $5 Million Construction Schedule – 1 construction season Clark Patterson Lee - design, construction admin. &
construction inspection
Penora Street Bridge Rehabilitation - Jason Havens, P.E.
1.1 Miles Roadway Reconstruction, Bridge Rehabilitation
(Year 1)
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Not Feasible / Over Budget
1 Construction Season
$5M over 1 Year
1 Contractor
Penora Street Bridge Rehabilitation - Jason Havens, P.E.
Feasible / Manageable Budget
3 Construction Seasons
$5M over 3 Years
3 phase design, up to 3
contractors
Revise scope
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0.6 Miles Roadway Reconstruction
(Year 1)
Phase 1
0.25 Miles Roadway
Reconstruction (Year 2)
Phase 2
Bridge Remaining Roadway (Year 3)
Phase 3
Penora Street Bridge Rehabilitation - Jason Havens, P.E.
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Amended Scope: • Rehabilitate superstructure and portions of
substructure, reconstruct ¼ mile of roadway with improved drainage and pedestrian access.
Penora Street Bridge Rehabilitation - Jason Havens, P.E.
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Construction Budget: $1.8M • Estimated Cost: $1.68M Bridge = $1.3M Roadway = $380,000
Actual Construction Cost: $1.70M
Bridge = $1.31M Roadway = $390,000 Additional costs directly associated with expanded
scope
Penora Street Bridge Rehabilitation - Jason Havens, P.E.
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Goals: • Compress schedule to accommodate end of
2013 school year. Begin construction June 2nd (school is out) No earlier start allowed
• Limit impact to 2014 school year Complete before plant shutdown Limit impact to bus traffic
• Avoid work in Cayuga Creek during wet season (fall)
• Substantial completion must occur within 5 months of start date
Penora Street Bridge Rehabilitation - Jason Havens, P.E.
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Penora Street Bridge Rehabilitation - Jason Havens, P.E.
P r o j e c t C o n s t r u c t i o n T i m e L i n e
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DEC – lead agency Floodplain management control
Less than a dozen in Erie County Identified Article 16 during Army Corps permit review Requires special conditions for restoration and storm
water pollution measures Lead to:
Reduced embankment footprint 1 year max for construction Further justifying phased construction
Penora Street Bridge Rehabilitation - Jason Havens, P.E.
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Penora Street Bridge Rehabilitation - Jason Havens, P.E.
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Penora Street Bridge Rehabilitation - Jason Havens, P.E.
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Penora Street Bridge Rehabilitation - Jason Havens, P.E.
Non-traversable
Non-traversable
Non-recoverable
Non-recoverable
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Orientation: 4o° Skew 2 Spans – 84ft each
Total 168ft bridge length Rocker Bearings Armored Joints
Joint at Pier Safety Curbs/Sidewalks
Both sides of bridge Scupper drains Painted Steel Girders Spiral Shear Connectors
Penora Street Bridge Rehabilitation - Jason Havens, P.E.
oOrientation: Maintain 4o° Skew
o Two-Span Continuous, with Intermediate Pier
o Elastomeric Bearings
o Armorless Joints (NYSDOT standard) oNo Joint at Pier
o Concrete Wearing Surface
oNo Safety Curbs/Sidewalks
oWash Deck – Water Drains at Fascia
oWeathering Steel Girders
o Shear Studs
Existing Conditions (1953) As-Built Design (2014)
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Penora Street Bridge Rehabilitation - Jason Havens, P.E.
Geometry Remains the same – 40 degree skew
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Penora Street Bridge Rehabilitation - Jason Havens, P.E.
As-Built: 2014 Existing Conditions: 1953
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Penora Street Bridge Rehabilitation - Jason Havens, P.E.
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Penora Street Bridge Rehabilitation - Jason Havens, P.E.
Continuous deck pour (6hrs – 245 cy, tie-downs at each end): Eliminated construction joints, saved 4 (critical) days
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Penora Street Bridge Rehabilitation - Jason Havens, P.E.
Means and Methods Field change Remove pier stem to top of footing
New rebar cage tied to #6 footing bars Aluminum form work with adjustable scaffolding rails Eliminate second coffer dam Remove steel girders for future use Continuous deck pour
Value Added: Reduced construction schedule by 6 weeks (Schedule) Pier life cycle extended (Limit future work in Creek – Permit) Cost Neutral for these methods of construction (Budget) 7% of total bridge costs
Design: Remove 6” concrete
Remove pier stem
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Penora Street Bridge Rehabilitation - Jason Havens, P.E.
Pier Stem Demo Cofferdam South aluminum form, in place
New rebar cage completion
Form work complete – 3 days
Scaffolding Rails
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Penora Street Bridge Rehabilitation - Jason Havens, P.E.
Bridge Construction Sequence
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Penora Street Bridge Rehabilitation - Jason Havens, P.E.
Bridge Construction Sequence
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Thank you
Penora Street Bridge Rehabilitation - Jason Havens, P.E.