sudden partial bridge failure and the replacement …...bridge program • thru 2014: 7 ......
TRANSCRIPT
Introduction
• Columbia County– David Robinson, P.E., Commissioner
– Dean Knox, Director of Engineering
• Barton & Loguidice, P.C.– Robert Sipzner, P.E., Project Manager
– Jeremy Bourdeau, P.E., Project Engineer
Introduction
• SEMO– Bill Winkler, P.E, Public Assistance
Liaison
– John Thomson, Disaster Assistance Officer
Columbia County Infrastructure
• Columbia County– Northeastern reach of Region 8
– County road maintained = 270+ centerline miles
– County bridges maintained = 137•52 located on county roads
•85 located on town highway
Columbia County Infrastructure
• Bridges– 15 = Reduced load postings
– 6 = Scour critical
Columbia County Infrastructure
• Large culverts– Large culvert structures maintained
= 105•Defined as structures from 5 feet to
just under 20 feet
•Located on county roads only
Columbia County Infrastructure
Total structures County is responsible for
242
Columbia County Bridge Program
• Thru 2014: 7 locally administered, federal aid bridge replacements
• Thru 2011: 4 locally funded bridge replacements
• In 2007: newly instituted, “dedicated” 4-person bridge maintenance/repair bridge crew
Columbia County Bridge Program
• But the County is also required to respond to structure needs due to sudden changes…
Project Locations and Descriptions
Project 1:CR 34 over Hollow Brook
• Town of New Lebanon
CR 34 over
Hollow Brook
CR 34:Pre-Replacement
• Structure Type: two distinct and abutting structure types– Upstream half of structure:
Dry-laid stone masonry arch
Carrying original road alignment in 1800’s (spring line span = 10.5’)
CR 34:Pre-Replacement
• Structure Type: two distinct and abutting structure types– Downstream half of structure:
Concrete superstructure on tall abutments
Realigned roadway in 1946 (span = 17.5’)
CR 34:Pre-Replacement
• In constructing the concrete structure– The stone arch was utilized to
retain the roadway embankment– Result = A single structure integral
and reliant upon the two abutting components
CR 34:Timeline
• Summer/Early Fall 2004: County subjected to multiple severe storms and flooding events, including hurricane remnants traveling up the eastern seaboard
• 8/29/04 to 9/16/04: Storms resulted in flood damage to CR 34 structure
CR 34:Timeline
• 50% of Stone Arch Portion Collapsed:– Reducing structure hydraulic
opening
– Severely compromised roadway embankment and fill on remaining structure
CR 34:Timeline
• 50% of Stone Arch Portion Collapsed:– Stone deposition in stream now
directing flow at remaining arch components
CR 34:Timeline
• Failure Mode:– Structure Type/Size – Flow
Constriction
– Passage of Excessive Flood Flows
– Alignment to Stream Flow
CR 34:Timeline
• FEMA declares county as disaster eligible under FEMA disaster No. 1564 DR NY
• Project actions, design and construction funding by federal and local dollars
CR 34:Timeline
• B&L retained to perform preliminary and final design, and construction support services: Fall 2004
• Coordination w/SEMO for funding assistance: final report submitted May 2005
• Final design/ROW acquisitions completed: April 2006
• Bidding/award:- May-July 2006
CR 34:Timeline
• Construction Contractor: A. Colarusso & Son, Inc.
• Construction Begins: September 2006
• Construction Shutdown: October 2006-June 2007 due to in-stream work restrictions
• Construction of replacement structure completed: October 2007
Project 2:Wire Road over Klein Kill
• Town of Livingston
CR 34 over
Hollow Brook
Wire Road over
Klein Kill
Wire Road: Pre-Replacement
• Structure Type:– Low volume roadway, joining CR 10
and CR 31
– Superstructure - 32 foot, single span jack arch
– Substructures - masonry abutments founded on rock
– Year built - 1935
Wire Road:Pre-Replacement
• Structure Type:– Begin right wingwall replaced with
concrete wingwall/tie-back system -1989
– Remaining wingwalls stone masonry construction
Wire Road:Timeline
• Early Spring 2004, Town of Livingston Supervisor observed major longitudinal roadway cracking at the end of bridge approach
• End left wingwall shifted outward, resulting in roadway longitudinal crack formation, 5’ in from the edge of rail
• Immediate determination for road closure until actions can be taken
Wire Road:Timeline
• Failure Mode:– Type of Construction/Age
– Overload or Excessive Runoff
– Sudden Shifting of Wall (Instability)
Wire Road:Timeline
• B&L retained to perform preliminary and final design, and construction support services: Spring 2004
• Final design complete: May 2005• ROW negotiations: May-December
2005• ROW completed: December 2005
Wire Road:Timeline
• Bidding/Award: January – May 2006
• Construction Contractor: Wm. J. Keller & Sons Construction Corporation
• Construction of replacement structure completed: October 2006
County Route 34 Structure Replacement
CR 34: Design/Construction Issues and Obstacles
• Monitoring of roadway for any continued deterioration encroachment, until replacement structure completed
CR 34: Design/Construction Issues and Obstacles
• Monitoring of roadway for any continued deterioration encroachment, until replacement structure completed
• Coordination with FEMA/SEMO to allow for full replacement
CR 34: Design/Construction Issues and Obstacles
• Coordination with FEMA/SEMO to allow for full replacement– Original Funding - $90,000 for Stone
Arch Reconstruction
– Would not correct Hydraulic or Structural Issues
CR 34: Design/Construction Issues and Obstacles
• Coordination with FEMA/SEMO to allow for full replacement-
Two Feasible Alternatives1. Wingwall Replacement
2. Full Structure Replacement (Recommended)
FEMA Funding -$220,000 for Alt. 1
CR 34: Major Issues and Obstacles
• Massive structure removal of the tall, concrete structure section
• In-stream permitting restrictions
CR 34:Major Issues and Obstacles
• Massive Structure Removal of the Tall, Concrete Structure Section
• In-Stream Permitting Restrictions • Tie-in with Varying Rock
Topography
CR 34:Structure Replacement
• Replacement Structure = precast concrete 3-side rigid frame
• Span = 18’ clear span, 19’-10” along skew
• Out-to-Out Width = 45’-3”• Height = 10’ frame rise, 25’ streambed
to roadwayFinal Construction Cost = $540,000
Wire Road Bridge Replacement
Wire Road: Major Issues and Obstacles
• Coordination with adjacent landowners opposed to the project/acquisition of right-of-way
• Coordination with three overhead utility lines and the need to relocate interfering poles
Wire Road: Major Issues and Obstacles
• Considerations for re-use or retention of original abutment stones
• Two distinct foundation types at each abutment
Wire Road:Bridge Replacement
• Replacement Structure = P/S box beam
• Span = 80’-0”• Out-to-Out Width = 28’-0”Final Construction Cost = $615,000
Summary
• Sudden Structure Failures• Emergency Response Actions• Use of Local (County) Funds• Design/Construction Challenges
Questions?