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

  • $1.49 billion for Oregon-Washington bridge
    August 26, 2024
    The existing Interstate 5 bridge connecting Portland and Vancouver over the Columbia River in the US northwest is actually two parallel bridges – one dating back to 1917.
  • São Paulo State Highway Authority wins the Evonik Road Safety Award 2018
    April 23, 2019
    For more than 50 years, Evonik – a world leader in specialty chemicals and the inventor of MMA cold plastic road markings - has been at the forefront of efforts to improve road safety and disseminate best practices in the field On 18th December 2018, Evonik bestowed the 3rd edition of the “Evonik Road Safety Award” in the city of São Paulo, Brazil. The Road Safety Award is designed to support sustainable road safety initiatives, as part of the company’s corporate and social responsibility. It acknowle
  • TRL delivers its vision
    July 31, 2012
    The UK's world-renowned TRL (Transport Research Laboratory) is celebrating its 75th birthday this year, and the objective of its work has not changed In 1938 Richard Stradling, director, wrote that "the objective of all the research work at RRL [now TRL] is to accumulate that body of scientific knowledge which is an essential factor in the economical and efficient construction and maintenance of our roads. Practical application of the results must be the aim throughout." While TRL's remit today is far more
  • AfPA appoints new chairman, Dante Cremasco
    May 20, 2022
    Cremasco, head of road services at integrated services provider Downer, takes over during a difficult time for Australian infrastructure contracts due to rapidly rising material costs.