WHAT WE DO:  JMEC performs state of the practice seismic analysis and provides cost effective seismic retrofit solutions to existing seismically deficient bridge structures (Category 1), and evaluates feasibility of bridge replacement vs. seismic retrofit. Seismic retrofit strategy considers deterministic and probabilistic approach depending on the risk and Importance of structure.

Bridge Design
WHAT WE DO:  JMEC's bridge design encompasses canal bridges, trail bridges to urban freeway ramps, overcrossings, bridge widening, culverts, transit structures, underpasses and overheads.  Bridge types include CIP prestressed box girders and R/C girders, precast prestressed girders, prestressed slab bridges, and steel girders.  Many are designed following Caltrans procedures and seismic standards.  JMEC provides bid support to contractors for Design-Build projects.

Trail Bridges
WHAT WE DO:  JMEC provides trail bridge design and bridge rehabilitation for various national forests, parks and recreational use.  The pedestrian bridge design follows AASHTO and FHWA policies and procedures.  Bridge types included concrete, timber and prefabricated steel bridges.  Work included approach roadway and other ancillary structures including retaining walls and minor structures.

Long Span Bridges
WHAT WE DO:  JMEC's experiences in major bridge structures with heavy lifting include erection methods using span-by-span, CIP segmental, precast segmental, and incremental launching.  JMEC provides construction engineering services include reviewing shop drawings, submittals, RFIs, and CCOs.  JMEC is part of the design teams for four major bridges in the SF Bay Area, including the new Benicia Martinez Bridge, the new Bay Bridge, the Golden Gate Bridge and the Carquinez Bridge.  Other major bridge projects included the new cable stayed Champlain Bridge in Montreal, Canada; the dismantling of existing 1,053-ft Gerald Desmond Bridge in Long Beach, CA; the Fourth Bridge across Panama Canal, Panama; and the Kuwait Causeway, Kuwait.
Corporate Office
165 Lennon Lane, Suite 106, Walnut Creek, CA 94598
Tel:  (925) 944-8999      Fax: (925) 944-9998

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