SERVICES

Whether your project involves extending a multi-use path along a stream or adding a direct-connect highway interchange flyover, our team is prepared to deliver a quality engineered solution.

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Roadway Design

  • ▪ Diverging diamond interchange (DDI)
    ▪ Single point urban interchanges (SPUI)
    ▪ Roundabouts
    ▪ Continuous flow interchange (CFI)
    ▪ Quadrant roadways
    ▪ Direct connect ramps

  • ▪ Large freeway/interstate reconstruction
    ▪ Widening
    ▪ Winding mountain corridors/freeways
    ▪ Urban arterials and collectors
    ▪ Rural arterials and collectors

Our team specializes in designing roadway solutions that best fit the natural and built environment, our client’s objectives, and the long-term needs of the community. Our expert team of engineers work to create transportation networks that not only connect communities but also prioritize safety and sustainability. With a keen understanding of the ever-evolving landscape of urban and rural infrastructure, we pride ourselves on delivering tailor-made solutions that address the unique challenges posed by each project.

Owner’s Representative

  • ▪ Contract Development
    ▪ Technical Requirements Development
    ▪ RFQ/RFP Development
    ▪ Contractor One-On-One Meeting Support
    ▪ ATC/ARE/TA/PAE Reviews
    ▪ Proposal Evaluation Assistance
    ▪ Design Development Review Support
    ▪ Construction Contract
    ▪ Administration
    ▪ Schedule Review
    ▪ Dispute Review and Support
    ▪ RFI Conformance Review
    ▪ Project Close Out Support

Our engineers bring a valuable perspective to design-build projects, having served on both the contractor and owner sides. This dual experience, coupled with our in-depth understanding of local practices, standards, and policies, makes Theorem uniquely suited for owner representation in design reviews for major transportation design-build projects. We offer comprehensive support spanning from development of the contract and technical requirements to advertisement, design, and acceptance.

Structural Design

  • ▪ Stream Restoration Design
    ▪ Hydrologic and Hydraulic River Modeling
    ▪ Floodplain Mapping
    ▪ Floodplain Permitting (CLOMR/LOMR)
    ▪ Bank Stabilization
    ▪ Bridge Scour Evaluations
    ▪ Scour Mitigation and Countermeasures

  • ▪ Stormwater Modeling
    ▪ Urban Drainage Design
    ▪ Storm Sewer Design
    ▪ Permanent Water Quality and Detention Design

  • ▪ MS4 Compliant Permanent Best Management Practices (BMP) Design
    ▪ Construction BMP Layout and Design
    ▪ Stormwater Management Plan Development

Theorem’s engineers have a distinguished portfolio of bridge projects spanning the state of Colorado. Our team boasts expertise in a comprehensive array of project delivery methods. To date, our engineers have successfully executed engineering services on nearly one hundred bridges within Colorado. We understand when to follow local standards and when a custom design is necessary. Our team's wealth of experience extends beyond bridges to encompass a broad spectrum of transportation structures including retaining walls, drainage structures, and utility structures.

Multi-modal Design

  • ▪ Bike lane and multimodal path design
    ▪ Streetscapes and complete streets designs
    ▪ ADA compliant designs
    ▪ Road diets

Theorem recognizes the importance of pedestrian walkways, cycling infrastructure, walkable neighborhoods, and safe routes to school in our design approach. A cohesive and efficient network for pedestrians, cyclists, and public transit helps to connect communities, reduce congestion, minimize environmental impacts, provide equitable transportation solutions, and enhance accessibility. Our designs reimagine urban landscapes, creating spaces that encourage healthier living, support economic vitality, and foster a sense of connection among residents. Theorem is experienced in ADA design and is committed to making their designs usable by people of all ages and abilities.

Drainage Design

  • ▪ Cast-in-place mildly reinforced concrete bridges
    ▪ Precast, prestressed girder bridges
    ▪ Curved, variable depth, spliced concrete tub girder bridges
    ▪ Steel plate girder bridges
    ▪ Pedestrian bridges
    ▪ Cast-in-place, post-tensioned concrete bridges
    ▪ Steel and Concrete Bridge
    ▪ Widenings
    ▪ Bridge scour retrofits
    ▪ Bridge deck repair/replacements
    ▪ Wildlife crossing

  • ▪ Full height and partial height concrete panel faced MSE walls
    ▪ CIP Concrete Cantilever and Gravity Walls
    ▪ Concrete Panel Faced Soil Nail walls
    ▪ Gabion Basket Walls
    ▪ Secant and Tangent Pile Walls
    ▪ Sheet Pile Walls
    ▪ Hybrid Wall Systems

  • ▪ Custom stormwater inlets, manholes, and junction structures
    ▪ Water Quality Pond Structures
    ▪ Concrete Box Culverts
    ▪ Custom Light/Traffic Signal Foundations
    ▪ Utility vaults and protection structures

We recognize the pivotal role that well-designed drainage systems play in the safety and functionality of transportation networks. Our team provides innovative and comprehensive drainage design solutions tailored to meet the goals and constraints of individual projects. We specialize in creating efficient, resilient, and sustainable drainage systems that mitigate stormwater challenges, improve water quality, and enhance the overall safety for the traveling public. Theorem’s engineers bring a wealth of expertise to every project. Our approach is centered around a deep understanding of the unique demands posed by Colorado roadway environments and the challenges of our Colorado clients. By collaborating closely with clients, we gain valuable insights into project requirements, site conditions, maintenance challenges, and relevant regulations, allowing us to craft solutions that integrate functionality, safety, resiliency, and compliance.

Asset Management

Theorem’s experience includes developing and maintaining asset management systems for various agencies, using data-driven insights to oversee the lifecycle of transportation assets. These asset management systems optimize infrastructure investments, improving long-term efficiency, safety, and cost-effectiveness. From roads and bridges to traffic signals and transit systems, we offer a comprehensive approach that encompasses maintenance, risk assessment, and strategic planning.

With a focus on collaboration and innovation, we work hand-in-hand with our clients to develop customized asset management solutions. Our approach enhances reliability, extends asset lifespans, and ultimately elevates the quality of transportation networks, allowing them to remain resilient in the face of evolving challenges.