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Transportation Infrastructure Engineering Services

Partnering for a Safe, Equitable, & Resilient System

RS&H is a trusted transportation engineering and design firm, offering a full range of transportation planning, design, environmental, program management, and construction management services for all modes, from walking paths to freight corridors and everything in between.

Our integrated teams of infrastructure planning and design consultants leverage decades of experience to help clients address funding challenges, prepare infrastructure for growing urban populations, and develop resilient transportation planning solutions for a more connected future.

From urban transit planning and design experts to specialists in multimodal transportation facility architecture, we provide innovative technology solutions for transportation and tolling, as well as comprehensive transportation infrastructure engineering services that keep people and goods moving.

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#12

Top 25 in Highways
Engineering News-Record

#17

Top 20 in Transportation
Engineering News-Record

#58

Top 500 Design Firms
Engineering News-Record

Focus Areas & Services

Projects

Insights

Transportation Focus Areas & Services

Our expertise spans every facet of transportation, from urban transit infrastructure planning to transportation construction management. These focus areas highlight how our specialized teams deliver innovative, resilient, and equitable transport planning, engineering, and design solutions for communities of all sizes.

Highways & Roads

RS&H delivers complex transportation infrastructure engineering services for roadway projects of every scale. As experienced infrastructure planning, engineering, and design consultants, we combine innovative roadway design with deep knowledge of technical standards to create solutions tailored to each client’s goals. Our approach considers safety, traffic patterns, sustainability, and development plans, while adhering to the latest state and federal guidelines. In the construction phase, our inspectors provide diligent transportation construction management, ensuring projects progress according to plans and specifications.

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Bridges & Structures

We offer comprehensive engineering services, spanning from conceptual analysis to final design and construction management, for both fixed and movable transportation structures. Our integrated teams bring expertise in new bridge locations, widening and rehabilitation, bridge inspection, and construction engineering. From simple span I-beam girders to complex steel and post-tensioned designs, our transportation design firm has delivered safe, durable structures that enhance connectivity and mobility.

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Construction Management

Our field-oriented construction professionals partner daily with clients and contractors to keep projects safe, on schedule, and within budget. RS&H’s transportation construction management solutions support agencies nationwide, including state departments of transportation, urban transit authorities, tolling authorities, and municipal governments. We bring proven processes that minimize disruption while maintaining quality and compliance.

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Tolls Consulting & Technology Applications

RS&H provides toll consulting and technology solutions for transportation and tolling to public agencies and authorities. Our services include all-electronic tolling, mileage-based user fees, congestion pricing, interstate tolling, and toll site planning and design. With firsthand agency experience, expertise in emerging technologies, and big data, our team delivers forward-thinking solutions for complex tolling and mobility challenges.

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Ports & Marine

Ports are vital to global trade, and our transportation planning, engineering, and design consultants understand the demands of maritime infrastructure. RS&H offers planning, programming, engineering, construction management, and consulting services designed to strengthen supply chains and support economic stability. Our tailored solutions help clients optimize operations, expand capacity, and integrate seamlessly into multimodal transportation networks.

Transit

Our team of urban transit planning and design experts includes architects, engineers, planners, and construction managers with deep experience across the entire project lifecycle. We provide services in policy and planning, financing, contracting, operations, strategy, construction, and technology for public and private transit systems. From multimodal hubs to last-mile connections, we deliver transit solutions that improve mobility and enhance community access.

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Traffic Engineering

We deliver transportation infrastructure engineering services that improve the performance and safety of complex transportation facilities. Our certified professional traffic operations engineers lead teams that use innovative techniques, modeling, and simulation to optimize operations for multimodal systems. From high-level planning to detailed traffic design, we create efficient, reliable networks for all users.

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Sustainability & Resiliency

RS&H helps clients meet environmental compliance requirements while embedding sustainable, resilient practices into every phase of infrastructure planning and design. We develop strategies that mitigate challenges posed by environmental changes and rising sea levels while advancing social, economic, and environmental goals. Our integrated approach ensures transportation systems remain safe, equitable, and prepared for future demands.

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Innovative Program Advisory

We serve as trusted program advisors, guiding clients through major corridor projects, alternative delivery methods, and complex procurement strategies. Our experience spans Design-Build, Public-Private Partnerships (P3), and Construction Manager/General Contractor (CMGC) projects. By combining transportation planning and technology expertise with program management, we help clients achieve more efficient and innovative project delivery.

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Planning

RS&H delivers master planning, urban planning, and comprehensive transportation planning services focused on improving mobility. We partner with clients to create transportation planning solutions that align with community values, protect natural resources, and support long-term growth. From early visioning to actionable plans, we provide clear paths forward.

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Environmental Services

Our environmental teams enable clients to design and deliver projects in compliance with the highest ecological standards. With specialists in ecology, air quality, noise, hydrology, and geology, we bring a multidisciplinary approach that supports sustainable transportation infrastructure engineering services. Our expertise ensures projects move forward responsibly and efficiently.

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Water Resources

We provide comprehensive water resource services, leveraging advanced modeling tools to optimize system performance and minimize costs. Our engineers and environmental scientists integrate hydrologic, hydraulic, and water-quality modeling into transportation infrastructure planning, engineering, and design, ensuring safe, sustainable water management for roadway, highway, bridge, and transit projects.

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Geospatial Consulting

RS&H’s geospatial specialists use the latest tools and data to solve complex infrastructure challenges. We deliver web-based GIS applications, dashboards, and spatial analyses that support transportation planning consultants and agencies in making informed decisions. Our solutions integrate seamlessly with transportation and urban transit infrastructure planning efforts.

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Transportation Projects

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I-4 Ultimate Corridor Improvements

This project involved the complete reconstruction of I-4, including the construction of 144 new bridges, major upgrades to 15 urban interchanges, new Intelligent Transportation Systems (ITS) within the FDOT right-of-way, and 21 miles of new tolled express lanes, two eastbound and two westbound.

Transportation

Central 70 Reconstruction P3

Central 70 is one of the most impactful projects of our generation, projected to result in $18 billion of new economic activity in Colorado by 2040. Consisting of reconstructing 10 miles of I-70, this $1.2 billion project was initiated to address local and regional congestion and to revitalize the local economy.

Transportation

City of San Antonio Bicycle Network Plan

RS&H's team provides complete expertise for all aspects of San Antonio’s mobility goals, from urban planning and design to placemaking to preliminary engineering and final design. Our approach identified various unique approaches and enhancements to this study.

Transportation

Topsail Island Bridge Replacement

RS&H was tasked by environmental agencies to design the ends of the bridge to minimize impacts to coastal wetlands in order for the project to be permitted. We had the challenge of designing bridge bent locations to avoid a submerged aquatic vegetation area under part of the bridge.

Transportation

Crosstown Parkway Extension

The new six-lane divided highway and bridge now serves as a critical hurricane evacuation route, a multi-modal transportation alternative including automobile, bicycle, pedestrian, and public transit accommodations, and includes an ADA-accessible canoe launch area.

Transportation

Explore Resources

Designing Tolling Infrastructure with Purpose & Vision

December 10, 2025

As we stand at the crossroads of modern infrastructure and technological advancement, the integration of intelligent design into our nation’s tolling systems represents a monumental endeavor.

Transportation

Navigating Environmental Excellence: NEPA Assignment for State DOTs

October 3, 2025By Jennifer Nix McGerald, CPSM

The National Environmental Policy Act (NEPA) Assignment program offers a transformative opportunity for state Departments of Transportation (DOTs) to assume federal environmental review responsibilities, streamlining project delivery and enhancing environmental autonomy.

Transportation

Ribbon cutting ceremony on a new bridge with gathered crowd and officials

Mental Health in the AEC – Sympathy vs Empathy

July 18, 2025

It starts with understanding the difference between sympathy and empathy and recognizing how these concepts can foster meaningful connections.

Transportation Aviation Aerospace

Drive Your Next Transportation Project Forward

For more than 80 years, RS&H has partnered with agencies and communities to deliver safe, sustainable, and future-ready transportation systems. From transportation planning to infrastructure engineering services, our teams are ready to bring your vision to life, moving it from concept to reality. Let’s start building the future of mobility together.

Build the Future of Transportation with Us

Join a team of transportation planning consultants, engineers, and architects shaping the systems that keep our world moving. At RS&H, you’ll work on projects that improve safety, mobility, and connectivity for communities nationwide. Own your career — and the road ahead.

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