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Albany Turnpike over CSXT Railroad Superstructure Replacement Project
East Chatham, New York
Intersection
Adjacent property
Intersection
Alban
y Tu
rnpi
ke
Pohdorf Drive
NY
R295 Utilities
NORTH
Existing Conditions Existing Bridge: Albany Turnpike over CSXT Constructed in 1906 Town of East Chatham, New York Berlin Construction Co., Berlin, CT Double Warren Through Truss Approx. 115’ Span x 18 ‘ Roadway Width x 17’
Deep Single Lane Roadway Vertical Clearance = 21’- 7” Timber Deck / Asphalt Wearing Surface
Given Information CSXT Owner (Major Maintenance) Low Volume, Minor Collector (Rural) Original Design Load H10 (10T = 20,000 lbs.
GVW) NYSDOT Inspection (Critical Event) Rated for 20T prior to inspection Load Posted to 4T in 2012 Structurally Deficient, Sufficiency Rating 43.3 Numerous Deterioration “Red Flags” Emergency Contract:
Bergmann Associates, Albany Office
First thoughts on the Project
Repair
Rehabilitate
Replace
• Original 20 Ton rating not possible in only repairing minor item(s).
• Repair current inspection “red flags” and also ones predicted for next inspection cycle (“yellow flags”).
• Restore Previous Load Posting (20 Ton) or Greater
• Most expensive option and one that the Owner had not budgeted.
Rehabilitation Scope Remove Asphalt Overlay, Timber Curb, and
Timber Deck Complete Steel Repairs to Trusses,
Floorbeams, and Bottom Lateral Bracing Remove and Replace Timber Stringers (as
needed) Install New Timber Deck & Curb, Pave Asphalt
Wear Crs. Re-open to Traffic Restrictions: No Construction Loads except Personnel; No
Temporary Reduction in Vertical Clearance; Temporary Shoring of Diagonals and Floorbeams required during Gusset Plate Repair/Replacement ; One Gusset Plate Repair at a Time
“Sleeved” Bridge Support & Platform
WAY-CR47 (Indian Mill Bridge) Rehabilitationover the Sandusky RiverWyandot County, OhioConstruction: U.S. Bridge/
Moving Toward Bid A couple problems came to light about this
plan …
… IT WASN’T A LONG TERM SOLUTION SO NO ONE WAS REALLY HAPPY WITH
THE SITUATION.
… IT WAS COSTING MORE THAN EXPECTED.
Bid Results Bidding (Rehabilitation Plans)
4 Contractors Invited to Submit Bid Mandatory Pre-Bid Site Visit Base Bid: Bridge Rehabilitation Alternate Bid: Superstructure Replacement (late
addition) Bid Results
Two Bids: $300k; $677k Only the Low Bidder Submitted an Alternate Bid:
$550k
One last ‘i’ and one last ‘t’ What was it going to cost to
recondition the existing abutments? If a ‘GO’, would the Town of East
Chatham be willing to own the bridge?
So Bergmann prepared schematic TS&L type plans (30%).
They were.
Loads Reactions % of CDS
Concrete Deck Slab & SIP = 120 psfConcrete Deck Slab (Strip or Foam) =
106 psfAsphalt Filled Steel Floor = 89 psf
Exodermic Deck = 75 psfTimber Panels = 62 psf
DL= 216 kDL= 191 kDL= 142 kDL= 135 kDL= 112 k
100%93%80%78%72%
Floor Framing Self Wt. = 22 psf Truss Self Wt. = 306 plf
FWS = 25 psf
DL= 40 kDL= 70 kDL= 45 k
Final Total (Exodermic) DL= 72.6k
Loads Reactions % of CDS&SIP
Concrete Deck Slab & SIP = 120 psfConcrete Deck Slab (Strip or Foam) =
106 psfAsphalt Filled Steel Floor = 89 psf
Exodermic Deck = 75 psfTimber Panels = 62 psf
DL= 54.1 kDL= 47.8 kDL= 35.6 kDL= 33.8 kDL= 27.9 k
100%93%80%78%72%
Floor Framing Self Weight = 22 psf Truss Self Weight = 306 plf
FWS = 25 psf
DL= 9.9 kDL= 17.6 kDL= 11.3 k
Final Total (Exodermic) DL= 72.6 k
Dead Load Study
Acceptable - So we have a green light to go forward …
New Scope of Work HL93 Live Load & NYSDOT Permit Vehicle Railing Service Level TL-2 One Lane, 14’-0” Clear Match or Improve Existing Sight Distance Outboard Sidewalk for Pedestrians Improve Existing Vertical Clearance Design Reconstructed Abutment Caps Concrete Approach Slabs
Proposed Site Plan Guardrail upgrades or extensions (red) Gabion retaining walls (maroon) Pavement transitions (green)
Proposed Profile Maintain SSD Improve rail
vertical clearance to 21’-9”
Recondition existing abutments
Schedule
PO issued USB
8/6/13Initial
Submittal
9/2513 Release for Fab
10/3/13
Shipped to Site
11/12/13
Begin Shipments to Site
11/18/13
Steel Erected
11/26/13
Concrete Slab Pour
01/14/14
Opened to Traffic
01/31/14
50 days 8 days 46 days
8 days 49 days 17 days
Total = 178 days
Steel Bridge Design Early Coordination of Final Loads & Reactions Different skews caused different truss spans Left =112’-5 ¾”; Right Truss = 114’-11 ¾” AASHTO DL & LL Loads, Wind Loads Strength, Service, Fatigue & Extreme Event Load
Comb. Top Chord/U-Frame Stability Check Gusset Plate Check (per 2009 FHWA Guidance
Report)
Steel Bridge Design Extreme Profile Change/Unusual Framing Exodermic Deck Layout, Slab Reinforcing &
Coordination Bearing Pad Design: Fixed & Sliding CDB
(Cotton Duck) Armored Expansion Joint: Wabo WA300
Compression Seal Vandal Protection Fencing Coordination NYSDOT Level 1 Load Rating (LRFR)
Exodermic® Deck DetailsCourtesy of the Bridge Grid Flooring Manufacturers Association (BGFMA) www.bgfma.org
For this project:
• WT4x5 Bearing Bars at 12” o.c.
• 1 ½” x 1/4” Distribution Bars at 6” o.c.
• 20 Ga. Haunch & Flat Pans
• Longitudinal: #3 bars at 6” o.c.
• Transverse: #5 bars at 8” o.c.
Steel Statistics Truss Girder Weight = 34,810 lbs. Heaviest Segment = 12,070 lbs. Floor Framing Weight = 40,443 lbs. Unique Floor Beams = 7; Unique Stringers =
18 Heaviest Section (Truss): W14x82 Heaviest Section (Framing): W18x50 Total Weight Steel & Hardware = 136,754 lbs. Total Fasteners: 5,462 Bolts Most Common Size: 7/8” dia. x 2 ½” (2,012
Bolts) Shipped in 4 Truck Loads
Superstructure Replacement Cost Mobilization $50.0k WZTC $5.0k Remove Existing Bridge $80.0k Furnish New Truss $450.0k Install New Truss $130.0k Earthwork $100.0k Concrete Work $210.0k Approach Work $175.0k Total $1,200.0k ($1.2M)
Project Participants Owner: CSXT Railroad, Jacksonville, FL
Ross White, Territory Manager Contractor: CP Ward, Inc. of Scottsville, NY
Steve Phillips, Vice President Design Consultant: Bergmann Associates,
Albany, NY Michael Cooper, P.E., Project Manager
Superstructure Design: Contech & U.S. Bridge Dave Morgan, P.E., Project Engineer
Exodermic Deck Design: LB Foster, Pittsburgh, PA Ed Coholich, Project Manager
Town of Chatham Mr. Jesse DeGroodt, Town Supervisor
What made this project work? Collaborative Partnership Innovative Thinking
Non-binding alternate bid proposal Exodermic Deck Steel framing (both at the south abutment and
sidewalk). Deck installation and pour sequence
- Leaving us with a unique project that was successful for the Town and the Owner -
Questions?