Traffic Engineering & Transportation Planning Projects
Red Light Enforcement Program
Elk Grove, CA
Interwest worked with the Elk Grove Police Department to create the criteria, select the locations, review plans, and provide assistance during the construction of the initial Red Light Enforcement Program. Our staff continues to be involved in the selection of new locations and to keep the Police Department updated on engineering changes that may impact the program.
Client: Elk Grove Police Department
Citywide Speed Survey
Westlake Village, CA

With some exceptions, California law prohibits the use of radar or laser technology to enforce speed limits that have not been established or updated on the basis of an engineering speed survey within a certain number of years. For all City arterial and collector streets, Interwest conducted a citywide study which included collection of new traffic count data and speed sample data, evaluation of collision history and calculation of collision rates, field review of existing street conditions and adjacent land uses, analysis of speed and collision data, preparation of a written report that provided speed limit recommendations, and presentation of the report to the City Council.
Client: City of Westlake Village
Citywide Traffic Study
Fillmore, CA
This study, which is currently underway and being conducted by Interwest, will evaluate existing and future conditions at all major intersections throughout the City. Future circulation system gap closures, a new business park, downtown intensification, and increased through traffic along the State route that serves as the most heavily traveled street in the City are all elements to be addressed in the study. Findings from the study will be used to prioritize capital improvements and update the City’s development impact fee program.
Client: City of Fillmore
Intelligent Transportation Systems (ITS)
Elk Grove, CA
Interwest worked on obtaining federal grant funding to implement the first two phases of the Elk Grove ITS Master Plan. From design to construction of the Traffic Management Center our staff has been directly involved in all phases of this project. Our staff also networks with other local agency staff to stay up-to-date on changing technology and other agencies projects.
Client: City of Elk Grove
Yokuts Avenue Mall Transfer
Stockton, CA
Interwest is currently working on a design project that will provide a bus transfer station in the City of Stockton. The adjacent land uses of two shopping malls, a junior college campus, and a major arterial with a Bus Rapid Transit route makes the location a perfect fit for the transfer station. Our staff will incorporate traffic calming elements such as bulb-outs and high visibility crosswalks to enhance the area and encourage walking and alternative mode use. Improvements will also include landscaping for aesthetics and traffic control.
Client: San Joaquin Regional Transit District
City Celebration 10k Run Traffic Control Plans
Westlake Village, CA

As part of its annual City Celebration, the City of Westlake Village hosts a 5K run, a 10K run, and a 1 mile walk. As contract City Traffic Engineer, Interwest staff prepared detailed traffic control plans and a chronology that identified respective duties of the event team members, coordinated in advance with the barricade service and Sheriff’s Department, field-checked traffic control setup, assisted with flagging operations, and provided real-time oversight throughout the event.
Client: City of Westlake Village
Laguna Ridge Major Roads
Elk Grove, CA
Interwest reviewed the improvement plans for the Laguna Ridge Specific Plan Area. The project provides all major roadway infrastructure for the Laguna Ridge Specific Plan in Elk Grove. The concept was to build roadways to their built-out conditions before development was allowed to continue in order to eliminate future problems that roadway expansion projects can cause.
Client: City of Elk Grove
Traffic Coordination for Grant Line/
99 Interchange and Promenade Mall
Elk Grove, CA
Interwest provided Plan Review and is providing assistance during the construction management phase to insure traffic operations are kept at acceptable levels. Our experienced staff uses its own TravelCast software (which is a traffic model that uses current traffic data and existing roadway construction projects to predict potential impacts to the roadway system) to identify impacted locations that need mitigation measures.
Client: City of Elk Grove