Rajappan & Meyer Consulting Engineers, Inc
Civil, Structural, Traffic & Transit Engineering

US 101 Auxiliary Lanes & US 101 /Peninsula Interchange Project

San Mateo, CA

Design - completed 2006

Construction - completed 2010


R & M completed, as a Prime Consultant, PS&E for the $120 million widening of US 101, which includes northbound and southbound auxiliary lanes and reconstruction of the Peninsula Avenue Interchange. The PS&E was delivered to Caltrans for review and bidding in July 2006. Caltrans awarded the project for construction in February 2007.

I-880 HOV Lane Extension

Oakland, CA

Design - completed 2012

Construction - in progress


R & M was retained by the Alameda County CMA and Caltrans District 4 to prepare preliminary plans, PSR & PS&E for a $35 million HOV extension along I-880 in Oakland, San Leandro. This project will extend the existing HOV lane northward by widening the freeway for one additional lane from south of Davis Street to Hergenberger Road. The interchange at Davis Street will be replaced with wider and higher overcrossings of I-880.

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Highway Design

I-5 North Stockton Corridor

Stockton, CA

Design - completed 2009

Construction - completed 2013


R & M is the Prime Consultant responsible for PSR, Project Approval, Environmental Documentation and PS&E phases. R & M is directly responsible for geometric, traffic staging, structural, stage construction, drainage and utility design. This project cost $450 million. The Project consist of Widening Interstate 5 mainline in each direction from Country Club Boulevard to north of Eight Mile Road, Constructing auxiliary lanes between Benjamin Holt interchanges, Modification of the existing interchange at Hammer Lane and construction of auxiliary lane from Benjamin Holt to Hammer Lane, Construction of a new interchange at Otto Drive and construction of auxiliary lanes from Hammer Lane to Otto Drive, Modification of existing interchange at Eight Mile Road and constructing auxiliary lanes from Otto Drive to Eight Mile Road, Construction of undercrossing north of Eight Mile Road with no ramp connections to the freeway and Construction of new interchange at North Gateway Boulevard and auxiliary lanes from Eight Mile Road to North Gateway.

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I-205 Auxiliary Lane Project

Tracy, CA

Design - completed 2009

Construction - completed 2012


R & M as the Prime Consultant to the San Joaquin Council of Governments, completed geometric design, traffic studies, design exception fact sheets, right of way data sheets and Project Study Report in 2007. The Plans, Specifications and Estimates were completed in 2009. During the planning and design of this $11.3 million project R & M incorporated latest geometric design and safety standards and provided design for lane closures and traffic detours. We also provided construction support as an independent engineer, responding to contractor's RFI, making field visits and proving solutions to construction issues.

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Sperry Road Extension Project

Stockton, CA

Design - completed 2010

Construction - completed 2014


R & M as the Prime Consultant completed a fast track final design of one mile of a new four lane principal arterial viaduct in south Stockton. This was a fast track Trade Corridors Improvement Fund (TCIF) bond project that is closely tied to the Interstate (I)-5/French Camp Road Interchange. The improvements include new elevated roadway between I-5 and Performance Drive, which will complete a new southern east west access to Stockton airport and the Arch Road / State Route (SR 99) Interchange.  The improvements will serve to relieve congestion on French Road and Charter Way in south Stockton. The project involves four bridges, including three grade separations over the Union Pacific Rail Road (UPRR). Final design was completed in October 2010. The construction was completed in 2014.

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Arch Road/SR 99 Single Point Interchange

Stockton, CA

Design - completed 2006

Construction - completed 2008


R & M as Prime Consultant completed preliminary and final design for a $35 million improvement to the Route 99/Arch Road interchange in Stockton. This interchange serves development around Stockton Metropolitan Airport, and requires expansion to handle the rapidly growing traffic demand. The challenging project required that Route 99 be reconstructed to travel over Arch Road, whereas Arch Road formerly crossed over Route 99. One 250 foot clear-span bridge was built over Arch Road for Route 99 traffic. Route 99 was converted from a surface facility to an elevated facility and was reconstructed for a distance of 3000 feet, with allowance for a six-lane section through the interchange area. The project art included depictions of historic transportation features such as wagon wheels and railroads.


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Kiernan Avenue/SR 99 Interchange

Modesto, CA

Design - completed 2012

Construction -  in progress


R & M was chosen as the prime consultant for PSR, PR, PS&E for urban diamond interchange upgrade. Includes 1 mile of SR 219 widening and SR 99 auxiliary lanes. For Stanislaus county, R & M is currently providing construction support which will include review of contractor's submittals, responding to contractor's request for information, reviewing alternative construction methods and materials, making intermittent field visits, and providing solutions to construction issues encountered on site.


ROUTE-99/Jack Tone Road Widening

Ripon, CA

Design - completed 1999

Construction - completed 2001


R & M, as Prime Consultant successfully completed the Traffic Design, Project Study Report, Environmental Document, PS&E, and Right of Way Acquisition for the award winning $15 million improvement to the Route 99/Jack Tone Road interchange and two miles of new roadway in Ripon. This interchange and roadway system serves as a hub of trucking and land development activity and required expansion to handle the rapid growth of the Central Valley. The final construction price was 5% under the engineer's estimate prepared by R & M. The project design was completed ahead of schedule and within design budget. This project was awarded the 2000 Regional Excellence Award by the San Joaquin County Council of Governments (SJCOG)

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I-205 Lammers Road Interchange

Tracy, CA

Design - completed PSR & PR in 2006

Construction - TBC


R & M as the Prime Consultant, completed a concept design and Project Study Report for construction of a new interchange on I-205 at Lammers Road. The interchange, located between 11th Ave. and Grant Line Road, is the first new interchange to be constructed in District 10 in the last 15 years. The interchange will serve to relieve congestion at adjacent interchanges and to accommodate the projected growth in housing and local development adjacent to I-205. 

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US-101 / Broadway Ave Interchange Project

San Mateo, CA

Design - completed PSR in 2005

Construction - TBC


R & M was elected by San Mateo County to prepare the Project Study Report. Tasks included preparation of preliminary plans, profiles and typical sections for the interchange. In addition, general plans and details were prepared for the new Broadway crossing over US 101 freeway. R & M also prepared the traffic operations and analysis for the project along with Right of Way data sheets to estimate the area and cost for right of way acquisition. R & M also prepared fact sheets for design exceptions. Future escalated costs were also estimated for the various project cost components along with a financial planning chart to distribute these costs over the project period. R & M also provided input for completion of Preliminary Environmental Analysis Report.

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Route 99 / Hammett Road  Interchange Project

San Joaquin Valley, CA

Design - completed PSR in 2009

Construction - TBC


R & M has completed geometric design, design exception fact sheets, right of way data sheets, and Project Study Report. R & M is under contract to prepare Project Report and to develop alignment, profile and cost estimatesfor the western end of the new North Country Expressway, which will tie into the Hammett / Route 99 interchange. During the planning and design, R & M incorporated latest geometric design and safety standards and provided design for lane closures and traffic detours. 

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Name of Assignment or Project : 1998 & 1997 Restoration of Roadways, Oakland

Year : 1997-1998

     Location : California, USA 

     Client : City of Oakland and Federal Emergency Management Agency

     Project Construction Cost: USD $3.5 Million

 Main Project Features : These projects involved development of alternatives and cost estimates for  slope stabilization which was  damaged by the 1998 storms.


R & M prepared the development of alternatives and cost estimates for slope stabilization of a section of Drury Road, which was damaged by the 1998 storms, in the City of Oakland.  R&M, with input from a geotechnical consultant, developed a unique low-cost slope stabilization solution using layers of horizontal hydraugers, storm drain lines and roadway embankment. R & M also prepared design solutions and construction documents for repair of a slipout on Oakwood Road in the Oakland Hills, which was caused by the winter rains in 1997 and had resulted in loss of shoulder and part of the pavement. After reviewing the geotechnical report prepared for this site, R&M design team prepared civil, structural and traffic handling plans and specifications, at record time, for construction of a 47' long by 10' tall tieback wall with timber lagging and steel soldier piles. In addition R & M prepared construction documents for repair of a washout on Exeter Drive, which was also caused by winter rains, and had resulted in loss of shoulder and one of the lanes.

Name of Assignment or Project : 1998 Flood Damaged Highway Repair Projects, Caltrans Districts 

1 & 3

Year : 1998

     Location : Caltrans District 1 & 3

Client : Caltrans District 1 & 3, California, USA

Project Construction Cost: USD $25 Million

Main Project Features : A total of eight projects were included in this contract.  The repair projects included stabilization trenches, rock slope protections, replacement and installation of cross-culverts, installation of drainage wells and under-drains, and reconstruction of embankments with lightweight fills such as expanded polystyrene block.


R & M prepared the design of highway repairs in District 1, California Department of Transportation, that were caused by the 1998 floods. We developed design solutions, alternatives and preliminary cost estimates during the design development stages, and for the preparation of final plans, specifications, and cost estimates for construction. All aspects of the design including horizontal and vertical control, surface drainage, construction staging, signing and striping, temporary traffic signals, specification and cost estimates. This program requires unique multi-agency coordination skills to get project concepts approved through Caltrans - California Department of Transportation, at District 1, 3 and Headquarters, Mendocino County Coastal commission, Army Corp of Engineers, US Fish and Wildlife Service, National Fisheries Service and utility companies.  This is a fast track program with numerous deliverables and extensive engineer-contractor coordination. 

Name of Assignment or Project : 1997 Storm Damaged Highway Repair Projects, Caltrans Districts

1 & 3

Year : 1997

     Location : Caltrans District 1 & 3, California, USA

Client : Caltrans District 1 & 3, California, USA

Project Construction Cost: USD $20 Million

Main Project Features : Projects include construction of stabilization trenches, soldier pile retaining walls with tiebacks, culvert replacements, bridge viaducts, and rock slope protections. 


R & M was involved in all aspects of the design, including horizontal and vertical control, surface drainage, construction staging, signing and striping, temporary traffic signals, specifications and quantity take-offs. This program also required unique multi-agency coordination skills to get project concepts approved through Caltrans at District 1, 3, Headquarters, Mendocino County Coastal commission, Army Corp of Engineers, US Fish and Wildlife Service, National Fisheries Service and utility companies.  This is a fast track program with numerous deliverables and extensive engineer-contractor coordination. 

Name of Assignment or Project : 1995 Flood Related FEMA Projects, Santa Clara County

Year : 1994 - 1997

     Location : Santa Clara County, California, USA 

    Client : Federal Emergency Management Agency, Santa Clara County, California, USA

Project Construction Cost: USD $8.5 Million

Main Project Features : These projects involved construction of soldier pile retaining walls with tiebacks, multi-plated culverts, mechanically stabilized embankments, rock slope protections and other flood related repairs caused by the 1995 heavy rains.


R & M managed preparation of all Specifications and Estimates.  R & M also managed five other civil engineering consultants; prepared overall program scheduling; and coordinated with county staff, Caltrans and Santa Clara Valley Water District.  This was a fast track project with numerous deliverables and extensive coordination. The Santa Clara County Roads and Airport Division oversaw this project.

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