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

  • The island of Mauritius is benefiting from new road links
    December 11, 2013
    The island of Mauritius is looking to expand its road links with upgraded highway infrastructure Aseries of road improvements are underway on the scenic island of Mauritius, which lies in the Indian Ocean around 2,000km off the coast of South-east Africa. Called the Road Decongestion programme, this has been set up by the Mauritius Government in a bid to improve transport and safety in this small island nation.
  • New Myanmar highway project awarded
    September 14, 2017
    A new highway project worth US$184 million has been awarded in Myanmar to a joint venture comprising Punj Lloyd and Varaha Infrastructure. The project will see the construction of an improved road link measuring 120km connecting Yagyi with Kalewa. The work is expected to take three years to complete and will include the construction of three large bridges as well as two small bridges.
  • Parsons is handling a major interchange project in North Carolina
    June 21, 2017
    Parsons is handling the design for a major interchange project in North Carolina. The firm will carry out key elements of design for the I-26/US 74/NC 108 Interchange Project. The deal was awarded by the North Carolina Department of Transportation (NCDOT).
  • The IRF World Road Meeting 2017 awaits you…
    October 19, 2017
    “With two months to the WRM 2017, I invite you to this global event which promises to be an excellent forum to hobnob with senior professionals in the industry and forge promising associations,” Kiran K Kapila, IRF chairman. This global event scheduled to be held in Delhi, India on November 14-17, 2017 is shaping up as a high profile event with confirmation of the participation of senior professionals from the road and mobility sectors of a number of countries. These include Abu Dhabi, Australia, Bangladesh