massena lateral bridge slide case study
DESCRIPTION
MaSSENA LATERAL BRIDGE SLIDE CASE STUDY. Jim Nelson, Iowa DOT. Project location. IA 92 over Small Natural Stream, 1.0 mile west of Jct. IA 148. Project location. Existing structure. 40’ x 30’ Steel I-beam Constructed 1930 Reconstructed 1949 Overlay 1968 Retrofit rail 1992 Overlay 1998. - PowerPoint PPT PresentationTRANSCRIPT
J I M N E L SO N , I O WA D O T
MASSENA LATERAL BRIDGE SLIDE CASE STUDY
PROJECT LOCATION
• IA 92 over Small Natural Stream, 1.0 mile west of Jct. IA 148
PROJECT LOCATION
EXISTING STRUCTURE
• 40’ x 30’ Steel I-beam• Constructed 1930• Reconstructed
1949• Overlay 1968• Retrofit rail 1992• Overlay 1998
EXISTING STRUCTURE
• Structurally deficient – sufficiency rating is 38.2• Bridge is not
adequate for legal loads – posted “One truck at a time.”
PROPOSED REPLACEMENT BRIDGE
• Pretensioned Prestressed Concrete Beam Bridge
MOBILITY IMPACTS
• Detour traffic for duration of construction• 7 miles out of distance travel for detour• AADT (2012) – 1,460 w/ 16% trucks• User costs for 180 day detour• Indirect $437,000• Direct $15,000 (Co. Road Maint. & Detour
Signing)
PROJECT STAGING AREA
UTAH DOT WANSHIP BRIDGE SLIDE
BRIDGE CONSTRUCTION VISUALIZATION
SEMI-INTEGRAL ABUTMENT
• Abutment Diaphragm Details – sheet number 14
SLIDING PAD
• Superstructure Details – sheet number 15• Bonded PTFE surface on bearing pad detail
PROJECT COST
• Let April 16, 2013
• Winning bid $1.3 Million
• Bridge unit cost - $112/SF
• Historic bridge unit cost - $85/SF
CRITICAL CLOSURE SCHEDULE
Activity 1 2 3 4 5 6 7 8 9Bridge Removal and GradingPavement RemovalRevetmentPile DrivingAbutment FootingBridge slidePrecast wingsBarrier RailingGranular BackfillApproach pavingLongitudinal GroovingSteel GuardrailPavement Marking
Day
MASSENA LATERAL BRIDGE SLIDE WEB SITE
CONSTRUCTION PROGRESS
ACKNOWLEDGEMENTS
• Designer – Iowa DOT• Constructability Review – Michael Baker
Corporation• ABC Peer Exchange – Utah DOT• ABC Detail Testing – Iowa State University• Construction Administration – Iowa DOT• Prime Contractor – Herberger Construction Co., Inc.• Precast Wing Supplier – Cretex Concrete Products• Precast Beam Supplier – Cretex Concrete Products• HfL Grant – FHWA