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Highways & Interchange Design 

US 101/Holly St. Interchange Project

  • San Carlos, CA

  • Design - completed 2018

  • Construction - TBD

R & M completed the PS&E for this $27 million reconstruction of the existing interchange on US 101 at Holly St. in San Carlos, CA. The project includes local street improvements and a new bike/pedestrian over crossing (POC) of US 101. R&M developed phasing options for the interchange improvements and the new POC to avoid a prolonged environmental approval process, separating the POC construction from the interchange allowed for the projects to be cleared under a CE/CE for the CEQA and NEPA.  This approach saved 8 months of the project development schedule and allowed earlier completion of the PS&E phase. LED lighting was used for sidewalks and key structure features of the POC such as columns and sides of decks. The color changing system would allow the City to celebrate various functions by employing various colors on the interchange and pedestrian overcrossing. 

I-10/Mt. Vernon Interchange Project

  • Antioch, CA

  • PSR/PDS - Completed 2018

  • Construction - TBD

R & M Consulting Engineers (R&M) is providing professional services to San Bernardino Associated Governments, acting as San Bernardino County Transportation Authority (SANBAG) for the Project Study Report-Project Development Support (PSR-PDS) Project Initiation Documents (PID) for the Local Street Operational Improvement Project. The PSR-PDS will utilize existing available information to identify support costs for the work and studies needed to complete the Project Approval and Environmental Document (PA&ED) phase and to gain Caltrans approval to advance the project. R&M services include studies, reports and drawing necessary to complete the PSR-PDS phase and obtain Caltrans approval. 

SR4 Crosstown Freeway Ramp Extension Project

  • Stockton, CA

  • Design - completed 2013

  • Construction - completed 2017

R&M, as the prime consultant  under contract to SJCOG, has completed the final design of a an elevated freeway project to extend State Route 4 West, also known as the “Crosstown Freeway”, westward from its current termini at Fresno Avenue to Navy Drive in the City of Stockton and County of San Joaquin.  The improvements include the widening of Navy Drive from just south of the Burlington Northern Santa Fe (BNSF) Underpass to Fresno Avenue. The Project spanned over the Boggs Tract neighborhood, the BNSF railroad, and the Central California Traction Company (CCTC) spur lines. The  cost for the project is $70 million in construction and $20 million in right of way. R&M has gained acceptance of an alternative “wide-flange super-girder” design alternative in Bridge Type Selection which will saved $20 million in construction. The extension was carried on twin viaduct (bridge) structures that crossed over Fresno Avenue creating a grade separation that will no longer allow highway traffic to enter the Boggs Tract neighborhood at Fresno Avenue. Navy Drive will be converted to a four lane facility with partial interchange. 

 

SR 4 - SR 160 Direct Ramps Project

  • Antioch, CA

  • Design - completed 2013

  • Construction - completed 2017

R & M was the Prime Consultant on this project.  R & M completed PS&E preparation for the completion of direct ramps between Route 160 and Route 4 in Antioch. This project is fast tracked to take advantage of BATA funding, with PS&E complete by mid 2013. The Project includes construction of direct ramps, two new bridges over UPRR, auxiliary lanes along Route 160 to Main Street, soundwall, drainage, storm water and ramp metering improvements. Close coordination with District 5, City of Byron and City of Antioch is underway.  

10th Street Reconstruction Project

  • Oakland, CA

  • Design - completed in 2010

  • Construction - completed 2017

R & M was selected by the City of Oakland for this bridge project. The major part of the project involves construction of a new cast in place pre-stressed box girder bridge on 10th street to span over the Lake Merritt Channel and replace the existing box culvert in place. The total length of the project is 0.5 km and the cost of the project is estimated $13 million.

 

Kiernan Avenue/SR 99 Interchange

  • Modesto, CA

  • Design - completed 2012

  • Construction - completed 2015

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.

 

I-880 HOV Lane Extension 

  • Oakland, CA

  • Design - completed 2012

  • Construction - completed 2015

R & M was retained by the Alameda County CMA and Caltrans District 4 to prepare preliminary plans, PSR & PS&E for a $36 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.

Sperry Road Extension Project

  • Stockton, CA

  • Design - completed 2010

  • Construction - completed 2014

R & M was retained by the Alameda County CMA and Caltrans District 4 to prepare preliminary plans, PSR & PS&E for a $36 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.

I-5 North StocktonCorridor

  • 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 $550 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.

12th Street Reconstruction Project - Oakland

  • Oakland, CA

  • Design - completed 2010

  • Construction - completed 2013

R & M was retained by City of Oakland for preparation of Traffic Analysis, Environmental Documents, Preliminary and Final design plans and Construction period services. R& M also coordinated with technical specialists and expert. We reviewed geometric standards, sign and marking standards. The project includes reconfiguration of roadways the south end of Lake Merritt, design of one cast in place box girder vehicular bridge (145 feet long and 132 feet wide), one prefabricated steel truss pedestrian bridge, nine retaining structures, modifications to impacted traffic signals, design of a new and improved drainage system, and relocation of impacted utilities. The project also involves improving access to the Kaiser Convention Center and Laney College, replacing unsafe and unsightly pedestrian tunnels with at grade signalized crosswalks, and improvements to bicycle lanes.

Route 101 / Willow Road Interchange & Willow Road Extension Project

  • Nipomo, CA

  • Design - completed 2010

  • Construction - completed 2012

R & M was the Prime Consultant to the County of San Luis Obispo, to prepare project development documents and final design for the Route 101 / Willow Road interchange and the Willow Road Extension in Nipomo. R & M completed all geometric design, traffic studies, design exception fact sheets, right of way data sheets, project reports, plans, specifications and estimates for the project. R & M also provided construction support as an independent engineer, which includes review of contractor's submittals, responding to contractor's RFI's, reviewing alternative construction methods and materials, making intermittent field visits and providing solutions to construction issues encountered on site.

 

Route 99 / Hammett Road  Interchange Project

  • San Joaquin, 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. 

US 101 Auxiliary Lanes / Widening

  • San Mateo, CA

  • Design - completed 2006

  • Construction - completed 2012

R & M completed, as a Prime Consultant, PS&E for the $125 million widening of US 101, which includes northbound and southbound auxiliary lanes and reconstruction of the Peninsula Avenue Interchange. Replacement Peninsula Ave over crossing, construction of Broadway pedestrian over crossing, replacement of the Monte Diablo pedestrian over crossing, construction of 2 kilometeres of sound walls and construction of 8 new retaining walls.  The PS&E was delivered to Caltrans for review and bidding in July 2006. Caltrans awarded the project for construction in February 2007.

 

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 wee 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.

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.

 

Eight Mile Road Interchange Improvement Project

  • Stockton, CA

  • Design - completed  in 2005

  • Construction - completed in 2006

R & M was the Prime Consultant under contract to the City of Stockton to upgrade an existing narrow diamond interchange, in concert with the 1200 acre Spanos West Project in North Stockton. The project is located on Interstate 5 at Eight Mile Road. The project is widening Eight Mile Road to an eight lane cross section under I-5, with widening accomplished by tie-back walls adjacent to bridge abutments. The cost of this project was $8 million.

Trinity Parkway/Aksland Boulevard Extension Project

  • Stockton, CA

  • Design - completed  in 2004

  • Construction - completed in 2006

R&M was retained by the City of Stockton as the Civil and Structural Design Consultant for the Trinity Parkway/Aksland Blvd.  extension project. The project extended Aksland Blvd. from the Aksland/Otto drive intersection to the Trinity/McAuliffe Road intersection over Bear Creek, a navigable waterway. The project constructed a four-lane cross section road with sidewalk, including construction of a bridge across Bear Creek to facilitate boating in the creek, and construction of a 12 foot wide bike path on top of the existing levee. The scope of work included the preparation of Traffic Forecast and Operations Report, Environmental Reports, and PS&E. The project was constructed in 2006. Extensive coordination was required with the US Coast Guard and Army Corp of Engineers.

I-680 Corridor Widening & Sounwall

  • Fremont, CA

  • Design - completed 1999

  • Construction - completed 2005

R & M was retained by the Alameda County Congestion Management Agency (CMA) to prepare preliminary and final design plans for $10 million widening of the I-680 corridor between the northern and southern limits of Alameda County. As a follow up on project, R & M prepared PS&E for construction of soundwalls at 7 different locations with an approximate total length of 6.0 km along the I-680 corridor. the project design includes sound walls, retaining walls, drainage systems and several grade beam structures supporting sound walls spanning 11 meters over major utilities. 

 

US-101/SR-85 Interchange HOV Direct Ramp Project

  • San Jose, CA

  • Design - completed 2000

  • Construction - completed 2004

R & M was the prime consultant to prepare PR, PS&E for first HOV freeway to freeway direct ramp project in Santa Clara County. The project includes 2 miles of US 101 Widening, ramp metering, new median to median HOV direct ramp connector from Route 85 to Route 101 and preparation for Express Lanes for VTA. The cost of this project was $65 million.

I-10/Etiwanda Avenue Interchange Modification

  • Ontario, CA

  • Design - completed 2000

  • Construction - completed 2002

R & M as the Prime Consultant was responsible for the preparation of preliminary and final design plans for the reconstruction of the I-10, Etiwanda and Valley Boulevard interchange and roadway system. Construction including grading, drainage, roadways, signals, ramp metering, culverts, new ramp separation structure and electrical work. This project consisted of reconstruction of the I-10/Etiwanda Avenue Interchange from full cloverleaf to a partial cloverleaf design, reconstruction of the I-10/Valley Boulevard directional ramps to a new south roadway, construction of new auxiliary lanes on I-10, between I-15 and Etiwanda Avenue and construction of a new 2-bridge span ove the UPRR and San Sevaine Flood Control Channel.

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.

 

1998 Flood Damaged Highway Repair Projects

  • Caltrans Districts 1 & 3 

  • Client : Caltrans District 1 & 3, California, USA

  • Project Construction Cost: USD $25 Million

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. 

1998 & 1997 Restoration of Roadways 

  • Oakland, CA

  • Client: City of Oakland and Federal Emergency Management Agency

  • Project Construction Cost: USD $3.5 Million

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.

1997 Storm Damaged Highway Repair Projects

  • Caltrans District 1 & 3

  • Client : Caltrans District 1 & 3, California, USA

  • Project Construction Cost: USD $20 Million

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.