Harry W. Nice/Thomas “Mac” Middleton Bridge Replacement

Newburg, Maryland, United States

Filter projects by:


  • Cities

    Cities EMIA

  • Commercial & Residential

    Mixed Use




  • Education

    Colleges & Universities


  • Energy

    Carbon capture, utilization and storage


    Grid modernization



    Microgrids and energy storage

    Offshore wind

    Portfolio Decarbonization and Climate Resilience


    Transportation decarbonization

  • Environment

  • Healthcare

    Clinical Hospital

    Life Sciences

    Senior Living

  • Industrial

    Agriculture, Food & Beverage

    Automotive & Heavy Equipment & Machinery

    Digital Infrastructure

    High Performance Logistics


    Mining & Metals

    Pharmaceutical/Specialty Chemicals

    Pulp & Paper

  • Justice

  • Leisure

    Arts and Culture

    Hotels and Resorts

    Themed Entertainment and Mixed-Use

  • National Governments

    Civil Works

    Disaster Resilience

    Infrastructure & Facilities

  • Oil, Gas & Chemicals





  • Sports and Venues


    Convention Centers

    Olympics & Mega-Events

    Stadiums & Arenas

  • Transportation

    Air Cargo



    Connected and Autonomous Vehicles

    Freight Rail

    Highways & Roads

    Mass Transit

    Ports & Marine

    Transportation decarbonization


  • Water

    Dams & Hydropower

    Flood and coastal resilience

    Industrial Water

    Tunnels, Conveyance, Collection & Distribution

    Wastewater Treatment & Reuse

    Water Treatment

    Watershed and Ecosystem Management


  • AECOM Capital

  • Alternative Delivery Models

  • Architecture and Design


    Asset Advisory

    Climate Adaptation

    Community Engagement

    Interior Architecture

    Landscape Architecture


    Urban Analytics

    Urban Design

    Urbanism + Planning

  • Asset Management

  • Cities Solutions

  • Construction Management

  • Converged Resilience

  • Cost Management

  • Digital Infrastructure Services

  • Economics

  • Electric Vertical Takeoff and Landing Solutions

  • Engineering

    Ground Engineering

  • Environmental Services

    Air Quality Consulting and Engineering

    Climate Adaptation

    EHS Management Consulting and Compliance

    Environmental Contracting

    Environmental/Social Impact Assessment and Permitting

    Management Information Systems (MIS)

    Remediation, Restoration and Redevelopment

  • Fabrication

  • Finance

  • Industrial and Commercial Operations and Maintenance

  • IT and Cybersecurity

  • Mobilitics

  • Multinational Investment and Development

  • Pedestrian Modelling (North America)

  • Planning and Consulting

    Geospatial Services

    Pedestrian Modelling

  • Process Development & Implementation

  • Program Management

  • Public-Private Partnerships

  • Risk Management & Resilience

    Critical Infrastructure Protection

  • Simulation Models

    Rail Simulations

  • Strategic consulting

    People + Place Advisory

  • Tunnels, Trenchless Technology and Underground Infrastructure

  • Vertical Transportation Services (North America)

  • Visualization and Virtual Reality


  • Africa

  • Algeria

  • Antarctica

  • Australia

  • Azerbaijan

  • Bahrain

  • Bangladesh

  • Belgium

  • Bolivia

  • Bosnia and Herzegovina

  • Brazil

  • British West Indies

  • Canada

  • Caribbean-Puerto Rico

  • China

  • Colombia

  • Croatia

  • Czech Republic

  • Egypt

  • Eritrea

  • Finland

  • France

  • Germany

  • Greece

  • Greenland

  • Haiti

  • Hong Kong

  • India

  • Indonesia

  • Iraq

  • Ireland

  • Italy

  • Japan

  • Kenya

  • Kingdom of Saudi Arabia

  • Kuwait

  • Liberia

  • Lithuania

  • Malaysia

  • Maldives

  • Mali

  • Malta

  • Mauritania

  • Mexico

  • Monaco

  • Mongolia

  • Montenegro

  • Myanmar

  • Netherlands

  • New Zealand | Aotearoa

  • Norway

  • Oman

  • Panama

  • Papua New Guinea

  • Peru

  • Philippines

  • Poland

  • Portugal

  • Qatar

  • Romania

  • Singapore

  • Slovakia

  • South Africa

  • South Korea

  • Spain

  • Sri Lanka

  • Sweden

  • Switzerland

  • Taiwan

  • Turkey

  • Ukraine

  • United Arab Emirates

  • United Kingdom

  • United States

  • Vietnam

  • Worldwide

AECOM is the Lead Designer for the new Nice-Middleton Bridge across the Potomac River between Maryland and Virginia for the design-builder, Skanska-Corman-McLean (SCM).

The new Governor Harry W. Nice/Senator Thomas “Mac” Middleton Bridge (Nice-Middleton Bridge) brings faster, safer vehicle and maritime travel to a key gateway over the Potomac River between Maryland and Virginia. The new four-lane Nice-Middleton Bridge replaces the existing 1.9-mile, two-lane bridge that was originally opened in 1940 and had reliably stood the test of time; however after seven decades of dedicated service, it had reached its end of service life.

The new 61-foot-wide, four lane concrete and steel bridge will alleviate traffic congestion and enhance safety. Over time, the existing bridge became a bottleneck along US Route 301 as four lanes of traffic needed to merge into two lanes to cross the bridge, which resulted in lengthy queues. Due to the age of the structure, it also did not meet current safety standards. The new Nice-Middleton Bridge provides twice the traffic capacity with its four 12-foot-wide lanes and includes shoulders to improve safety and facilitate access for emergency response, maintenance, and wide-load vehicles. It also has a navigational vertical clearance of 135 feet, enabling tall ships to pass beneath it, and more gradual vertical grades to allow vehicles to maintain a safe, consistent speed. The innovative bridge design incorporated efficient and cost-effective span lengths, structural performance, constructability, and maintainability considerations that saved project costs for the Maryland Transportation Authority while improving aesthetics and lowering long-term maintenance costs.

The design-build team identified opportunities early-on to advance sustainability on the project. Sustainable practices were utilized throughout the project including the re-use of 18,000 cubic yards of Potomac River sediment delivered to the Weanack Reclamation site that reclaims undesirable river mud to transform over 100 acres of highly productive agricultural fields and wildlife habitat; re-use of approximately 9,500 tons of the original bridge concrete that was transported to an artificial reef site to enhance the habitat; and creating newly seeded oyster beds on the 148-acre natural Lower Cedar Point Bar to advance Maryland’s clean water goals. Additionally, all the existing toll booths were replaced with all-electronic tolling on the new bridge which eliminated lane-shifting safety issues at the toll booths and backups that will translate to fuel savings and reduced emissions.

The design of the bridge provides for a 100-year service life and is a benchmark to the start of a new era for the southern Potomac area of Maryland and Virginia. Innovative design features were used to extend the service life including minimizing the number of deck expansion joints; drainage features to limit damage from de-icing salts used on the deck; the use of custom-designed high-performance concrete mixes; and using low-carbon chromium reinforcing steel in specific locations. The design reduces life-cycle costs through state-of-the-art design details, durable material selections, and provides a structure that is easily accessible for future inspections and maintenance.

The new bridge opened to traffic over two months ahead of schedule on October 12, 2022 and final completion of the project is anticipated in December 2024 when demolition of the old bridge is completed.