Transportation
projects are complex and require a comprehensive approach that is responsive
and flexible. Straightforward planning and design solutions must consider
all potential impacts including social, land use, environmental and economic
conditions. We start with a thorough understanding of these impacts and
create a balance between the need to enhance safety and capacity in the most
effective manner.
Using a "consensus based" approach, aided by state-of-the-art design /
modeling and imaging software, we can help you visualize, communicate and
complete your proposed improvements.
Yaggy Colby Associates' highly experienced team can respond to any size and
facet of your transportation project including:
Yaggy Colby Associates has over 40 years of highway/street design
experience. Our highway design group brings together a staff of innovative professionals to create
efficient and safe surface transportation facilities and structures for governmental agencies and
public clients. Our staff members integrate their ideas and resources to develop solutions that are
functional and cost efficient.
Our highway/street design experience is extensive and includes a wide variety of projects. We have
planned, designed, and inspected the completion of rural highways, urban interchanges, city streets,
parkways, and complex intersections. Many of these projects begin with project scoping and corridor
and alignment studies, which are followed by environmental documentation. These projects have
included features such as roundabouts, bicycle lanes, pedestrian facilities, and traffic signals.
Specific services that we provide include:
Detailed Design
Preliminary Design
Utility and Agency Coordination
Project Documentation
A safe and efficient multi-modal transportation system is a critical
component of a community's economy and quality of life. The movement of people and goods across all
transportation modes has a direct bearing on employment, shopping, entertainment, industry and
economic development. Problems resulting from unbalanced transportation systems include a loss of
community, air pollution, global warming, water pollution, and increased accidents.
Yaggy Colby Associates uses technologies and advanced electronics to revolutionize the efficiency
of all modes of multi-modal transportation systems including railroads, airports, highways, and
other modes.
Our team provides services for the following project types:
Railroads
Airports
Bike and Pedestrian Facilities
Rest Area Facilities
Yaggy Colby Associates offers a wide range of transportation planning
services, supplemented by our services in traffic modeling and design. Responding to growing roadway
capacity and safety needs and the public demand for comprehensive solutions, planning for multiple
modes has become the standard for neighborhoods and communities. Our approach emphasizes the
development of creative, cost-effective and integrated plans that work for both simple and complex
transportation systems. The perspective we bring to reducing congestion and enhancing safety goes
beyond roadway and traffic design to include transit systems, bicycle, and pedestrian modes. We can
also address planning needs for airports, rail and ports.
Our Transportation Planning products and services include:
Access Management and Corridor Studies
Local Circulation Studies
Transportation Plan Preparation
Inter-modal Facility Planning
Project Documentation
Yaggy Colby Associates' traffic staff is trained and experienced in
all aspects of traffic engineering. This includes collecting and processing traffic data,
developing traffic projections, and evaluating the impact of new development on existing roadway
systems, to ultimately completing traffic planning studies, designing individual traffic signals
and designing complex traffic control systems covering an arterial or street corridor with
multiple intersections.
Ensuring the efficient movement of vehicles and pedestrians, while paying close attention to
the goals and objectives of the community and region, is the basic premise of all the traffic
engineering services we provide. Our staff understands the impacts of varying traffic
conditions and can design the necessary roadway geometrics, traffic control systems, and
traffic calming methods to provide the highest level of traffic operation in the area.
Our Traffic Engineering Services include:
Traffic Impact Analysis
Travel Demand Management
Traffic Studies
Traffic Signal System Design
Intelligent Transportation Systems (ITS)
Signing and Striping Design
Street Lighting Design
Traffic Control Design
Roundabout Design
Intersection Control Evaluations
Yaggy Colby Associates' Bridge and Highway structures team provides bridge design, evaluations, and construction
inspection services for public and private clients. Our bridge expertise includes design of new and replacement
bridges and box culverts, bridge widening and rehabilitation, design of pedestrian bridges, and inspection of
bridge construction. We are experienced with hydraulic analysis of new and replacement structures and designated
floodplains and floodways.
Yaggy Colby Associates assists our clients with the design of other highway structures including retaining walls
and embankment stabilization. Our engineers are trained and experienced with AASHTO LRFD design codes and the
bridge standards of Minnesota, Iowa, and Wisconsin.
We offer our clients effective management of the bridge design process from planning and preliminary design
through permitting and trail design and construction.
Our bridge and highway structures engineering services include:
Highway and Pedestrian Bridge Design
Bridge Widening and Rehabilitation Design
Retaining Wall and Noise Wall Design
Box Culvert Design
Sign and Light Tower Foundations
Bridge Hydraulic Analysis and Studies
Bridge/Highway Structure Aesthetic Treatments
Bridge Construction Inspection
Yaggy Colby Associates is your “Single Source Solution” for Right of Way Services. We have successfully completed
property acquisition for utilities, highways, airports, and other public works and infrastructure projects. Our
success is due to firsthand knowledge of issues that affect residents and business owners, along with exemplary
customer service. Having professionals with extensive experience in multiple facets
of the right of way process within one company ensures effective communication and a smooth flow from one step to
the next resulting in timely project completion.
Let us assist you in your next project and demonstrate our expertise while building a relationship of trust and
respect with you, our client.
Our Right of Way Services include:
Pre-Acquisition Services
(Right of Way Platting, Official Mapping, and Title Searches)
Acquisition Services
Relocation Services
Appraisal Services (Residential and Commercial Properties)
Environmental protection is an essential component in any project. Increasing state and federal regulations are
the result of growing concerns for taking greater care of our water, air, and other resources. Understanding and
complying with the many federal, state, and local requirements along with identifying environmental problems and
implementing the most appropriate solutions are important elements of our approach. Yaggy Colby Associates'
approach protects human health through the use of innovative solutions in harmony with the natural environment.
The firm provides these environmental-related services:
Regulatory Compliance
Site Assessments
Environmental Studies and Documentation
Wetland Services (Delineation and Mitigation)
Wetland and Prairie Restoration
Rain Garden Design
Waste Management
Permitting
Stormwater management is an important part of many of the services we provide. Yaggy Colby Associates has
extensive experience in surface water resources engineering. We have the knowledge required to meet the diverse
client needs for the design, management, construction, maintenance and regulation of stormwater systems. Our
experience extends from complex hydrologic and hydraulic modeling for large scale projects to stormwater collection
and management for small projects. We understand the requirements of the NPDES Permit, including the stormwater
program for Municipal Separate Storm Sewer Systems (MS4) and Best Management Practices (BMP) design. Our staff is
certified to design Storm Water Pollution Prevention Plans (SWPPP) and to perform construction inspection and
ensure environmental compliance.
Our professional services include:
Water Quality Design Compliance and Permitting (NPDES, EMP's, SWPPP's)
System Analysis and Modeling
Stormwater Management and System Planning
Design of Stormwater Features (Sewer Systems, Ponds, Erosion Control Systems and Sedimentation Basins)
Support Services:
Field Construction Services
Surveying Services
Landscape Architecture
Geotechnical Engineering
Public Outreach and Communication
Company Contacts:
Director of Transportation - Scott Samuelson, PE
Rochester, Mn:Don Miller, PE - dmiller@yaggy.com
Burnsville, Mn: Scott Samuelson, PE - ssamuels@yaggy.com
Mason City, Ia: Mike Danburg, PE - mdanburg@yaggy.com
Delafield, Wis: Mark Mickelson, PE - markm@yaggy.com