C.C. Tatham & Associates - Consulting Engineers  

Transportation Engineering

Traffic Impact Studies
Site Access & Circulation Reviews
Haul Route Reviews
Parking Studies
Area Transportation Studies
Road Needs Studies
Road & Intersection Designs
Class Environmental Assessments
Construction Implementation


Orillia University Avenue Extension

Transportation Engineering

Transportation Engineering involves the planning, design, construction, maintenance, and operations of transportation facilities and infrastructure. Our expertise encompasses traffic and parking operations, transportation planning and road/highway design for all types and levels of development, recognizing that transportation is critical for each. The safe and efficient movement of vehicles, whether it is to/from a single development site, or through an entire municipality, is the basis for our engineered solutions. 

Our staff are fully versed in Ministry of Transportation (MTO), Transportation Association of Canada (TAC), and county and municipal transportation standards and guidelines, in addition to the Municipal Class Environmental Assessment process which guides many solutions.



Traffic Impact Studies

CCTA has been involved in numerous traffic impact studies in support of new development. These typically include a review of existing conditions and transportation deficiencies, projection of future traffic volumes and operations without the proposed development, determination of additional traffic resulting from the proposed development and the potential impacts on the area road system. Where appropriate, mitigating measures are identified such as road widenings, additional turn lanes at intersections, improved intersection control (eg. traffic signals) and road alignment improvements to address sight line issues.  Traffic studies have been prepared for residential, commercial, industrial and institutional uses, with development traffic volumes ranging from 25 to 2,500 vehicles per hour.


Site Access & Circulation Reviews

In conjunction with investigating traffic impacts to the external road system, CCTA provides a review of the development site plan in the context of site access and circulation, identifying modifications to ensure requisite geometry to accommodate appropriate design vehicles. This is particularly important where developments must accommodate both auto and truck traffic, given the increased requirements of the latter and the desire to minimize conflicts between loading/unloading activities and typical site circulation. Access points/driveways are also reviewed with respect to size, number and location to ensure patrons can readily access and egress the site. These studies are also typically completed in lieu of a traffic impact study for those developments that are not expected to generate significant traffic volumes.


Haul Route Reviews

In support of new gravel pits, quarries, water bottling facilities and similar industrial uses, CCTA has worked with the site developers, local government and the general public to establish appropriate truck haul routes. Analyses have identified the volume of truck traffic to be generated and the potential impacts on traffic operations, road conditions, and safety. Improvements to ensure haul routes can adequately and safely accommodate truck traffic have been identified, including road widenings, shoulder widenings, resurfacing, and intersection improvements.


Parking Studies

Parking studies are completed to address specific development parking requirements in context of local parking demands and standards, or to consider the overall parking demands in a larger, municipal context. These studies often include the completion of parking and duration counts to determine existing parking demands and patterns, an identification of future parking demands in consideration of expected development growth, and recommendations with respect to how such demands can be accommodated.  Parking layouts and configurations are reviewed for purposes of optimization and control. In context of municipal parking, parking rates can be reviewed as can government structure with respect to parking administration.


Area Transportation Studies

Area transportation studies provide an overall indication of travel demands and requirements for a larger area - typically along a major travel corridor, within a built area or within a municipal boundary. Similar to a traffic impact study, but on a larger-scale, these studies seek to establish existing conditions through an assessment of traffic volumes.  In consideration of anticipated growth, the effectiveness of the existing road system is reviewed. Where appropriate, recommendations are provided that will improve the efficiencies and operations of the existing system (ie. intersection improvements and signalization), increase the overall capacity (through road widenings or provision of new roads) or reduce travel demands through appropriate demand management measures (increased transit, alternative travel modes, etc.).


Road Needs Studies

The intent of road needs studies is to provide the road authority with an inventory and assessment of the road system. Inventories are completed to document the physical characteristics and conditions of each road section within the network, and identify road deficiencies. In consideration of traffic volumes, role and function of each road section, and allotted road improvement budgets, appropriate strategies are identified. Improvements are subsequently prioritized in relation to the overall cost and volume of traffic served, thus ensuring the most cost effective approach.


Road & Intersection Designs

In consideration of increased travel demands, road improvements are often required to increase overall capacity and/or operations. These often include road widenings, provision of additional turn lanes or other such improvements. Road improvements are also required to address aging infrastructure, whereby a road or intersection is simply reconstructed to maintain what’s there. In either case, CCTA undertakes all aspects of the project development. This includes initial site investigations and topographic survey, feasibility assessment, preliminary design and assessment of alternative improvement strategies, and final design. Where necessary, design works are coordinated with utility agencies and necessary approval agencies (ie. MTO, MNR, Conservation Authorities, etc.).


Class Environmental Assessment Studies

To address potential impacts associated with transportation projects and ensure proper consultation with affected public and agency groups, CCTA completes Class Environmental Assessments in accordance with either the Municipal Engineers Association or the Ministry of Transportation of Ontario. In these projects, in addition to the engineering assessments and evaluations, CCTA undertakes public, stakeholder and agency consultation, as well as coordination with various disciplines for thorough environmental impact assessments and evaluations. Thoughtful consideration for public and agency comments and requirements in developing the final, preferred solution is integral to each project.


Construction Implementation

In addition to our engineering design services, CCTA also provides services related to construction implementation. This includes the preparation of construction drawings, contract specifications and tender documents; obtaining the necessary approvals and permits; and completing the tendering process including contractor pre-qualification, advertising, and review of submitted tenders. During construction, we act as a representative to the client and provide contract administration and construction inspection to ensure that the engineering designs and specifications are fully adhered to. Following completion, we prepare for-record drawings to document the final build, and continue to provide support services through to the completion of the construction warranty period.