Skip to main content

Arcadis for Calcasieu Bridge replacement work

Replacement of the 70-year-old Calcasieu River Bridge in the US state of Louisiana will revive a connection between the cities of Lake Charles and Westlake.
By David Arminas June 12, 2025 Read time: 2 mins
The 2km-long Calcasieu River Bridge, opened in 1952, is an arched cantilever, rivet-connected Warren through truss for the main span located on Interstate 10 between Lake Charles and Westlake (image © Typhoonski/Dreamstime)

Arcadis has been appointed to support the design work for the I-10 Calcasieu Bridge Improvements Project in the US state of Louisiana.

The replacement of the 70-year-old Calcasieu River Bridge will revive a vital connection between the Louisiana cities of Lake Charles and Westlake. With a project cost valued at US$2.3 billion, the Calcasieu Design Partners will upgrade a crucial 9km stretch of I-10, delivering enhancements to improve safety, connectivity and sustainability.

The 2km-long Calcasieu River Bridge, opened in 1952, is an arched cantilever, rivet-connected Warren through truss for the main span located on Interstate 10 between Lake Charles and Westlake. “The Calcasieu River Bridge has served the region for 70 years, but as it nears the end of its lifespan, the need for intelligent, modern and sustainable solutions is more critical than ever,” said Alan Brookes, chief executive of Arcadis.

Arcadis is working as part of a joint venture with Janssen and Spaans Engineering, Modjeski and Masters as well as Huval and Associates – collectively known as the Calcasieu Design Partner. The team will support Louisiana Bridge Builders, a construction joint venture between Arcadis’ key client Acciona and Sacyr Construction.

The project is overseen by the concessionaire, Calcasieu Bridge Partners (Acciona, Sacyr and Plenary), in collaboration with the Louisiana Department of Transportation and Development, also a key client of Arcadis.

Over eight years, Arcadis’ will update existing interchanges and roadways. Pulling on expertise from across North America, the Netherlands and the company’s Global Excellence Centers in India, Romania and the Philippines, Arcadis will deliver a range of specialised intelligent mobility, engineering and design services.

These include traffic engineering, including the development of a transportation management plan and the design of permanent signage, signals and pavement markings. There will be structural design work for sign support structures, roadway and drainage as well as bridge design for the I-10/I-210 flyover ramp and hydraulic modeling for the main span bridge.

Related Content

  • A new highway for northern Colombia
    July 17, 2023
    The Pamplona-Cúcuta highway is playing an important role for the development of northern Colombia
  • New highway links spanning the Mississippi River
    August 9, 2017
    Construction work is now underway for new bridges carrying the I-74 Interstate highway across the Mississippi River between Iowa and Illinois in the Quad Cities area. The project forms part of a US$1 billion programme of works intended to cut congestion at peak periods along the route. This will improve traffic flow and reduce journey times for drivers. The project is being planned jointly by the Department of Transportation for Illinois and the Department of Transportation for Iowa. The highway bridges wil
  • Work to start on Tyne Bridge refurbishment
    March 11, 2024
    In the UK, Esh Construction was appointed by Newcastle and Gateshead councils in June 2022 to carry out the €48.5 million programme of repairs.
  • Spencer Group cable access for Pattullo Bridge
    July 3, 2023
    Spencer is working on behalf of Fraser Crossing Constructors GP - a joint venture between Acciona and Aecon - on the suspension bridge near Vancouver, Canada.