WHAT HAVE BEEN ACCOMPLISHED:
JMEC was prime design consultant for preparing PS&E of six bridges, and was consultant for the independent check of PS&E for three other bridges. JMEC performed seismic analysis and design, determined retrofit strategies, prepared plans, specifications and estimates, and provided as-needed construction design support services.
The Florence Avenue over Rio Hondo Channel is a 218-ft 3-span concrete girders on pier walls. Maximum span is 85-ft, bridge width is 95-ft and carries 3 lanes of traffic in each traffic direction. The original bridge was built in 50's and 60's, and was widened on both sides in 1975. The expansion joints and joints between various structures are not adequately retrained. The retrofit strategy was to improve connections among various structures and to prevent drop spans at the expansion joints. The retrofit measurements included:
JMEC was prime design consultant for preparing PS&E of six bridges, and was consultant for the independent check of PS&E for three other bridges. JMEC performed seismic analysis and design, determined retrofit strategies, prepared plans, specifications and estimates, and provided as-needed construction design support services.
The Florence Avenue over Rio Hondo Channel is a 218-ft 3-span concrete girders on pier walls. Maximum span is 85-ft, bridge width is 95-ft and carries 3 lanes of traffic in each traffic direction. The original bridge was built in 50's and 60's, and was widened on both sides in 1975. The expansion joints and joints between various structures are not adequately retrained. The retrofit strategy was to improve connections among various structures and to prevent drop spans at the expansion joints. The retrofit measurements included:
- Add transverse shear blocks, seat extensions and abutment blockings at both abutments
- Add pipe seat extensions at all expansion joints
- Tie non-continuous pier walls by cable restrainers
- Add exterior shear keys to all piers
Project Role: Prime Consultant for Bridge Design
Clients: Los Angeles County Department of Public Works
Clients: Los Angeles County Department of Public Works
Schedule: Construction was completed in 2010
Overall View of Florence Avenue over Rio Hondo Channel
Pier Retrofit showing Exterior Key and Cable Restrainers
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165 Lennon Lane, Suite 106, Walnut Creek, CA 94598
Tel: (925) 944-8999 Fax: (925) 944-9998
165 Lennon Lane, Suite 106, Walnut Creek, CA 94598
Tel: (925) 944-8999 Fax: (925) 944-9998
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