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

  • Kentucky’s 1931 Ledbetter road Bridge comes to an explosive end
    October 1, 2014
    Specialist demolition contractors working for the Kentucky Transportation Cabinet have successfully brought down one truss span of the Old Ledbetter Bridge near Paducah. The bridge has been taking traffic across the Mississippi River since 1931. Boat traffic on the Tennessee River was halted for about 90 minutes by the U.S. Coast Guard. KYTC said there were several audible warning signals, then a countdown, followed by a flash and puff of smoke from the explosive charges. As sound of the explosion echoed a
  • Pilosio and CMC Ravenna collaborate on Cornubia Interchange
    June 4, 2019
    The South African branch of the Italian construction company CMC di Ravenna again teamed up with formwork specialist Pilosio to take advantage of Pilosio's solutions. This time it was for construction of a new bridge in the city of Durban, a project named N2/Cornubia Interchange. The overpass will streamline traffic by linking the Umhlanga industrial zone with the Cornubia new development area Tongat. Cornubia is a multibillion rand integrated settlement near Umhlanga, north of Durban, in KwaZulu Natal,
  • Us bridges pose cause for concern
    August 2, 2017
    On Aug 1st 2017, it was 10 years since the I-35W Bridge in Minneapolis collapsed. The bridge had been classified as structurally deficient and was undergoing repair at the time. However the repairs focussed on the decking rather than the structure, with the additional weight of the extra asphalt layers and the construction machinery parked adding to the total load and contributing to the collapse.
  • Roads a priority in Oman’s $14.8bn infrastructure spend
    May 29, 2013
    An upcoming summit will look at opportunities offered by Oman’s infrastructure plans. Oman is planning to spend some US$14.8 billion on infrastructure in the coming years. The figure, almost half of the country’s 8th Five-Year Development Plan for 2011-2015, has been earmarked for overhauling roads, ports and airports with the objective to link the three modes of transport to improve interconnectivity. Oman’s huge infrastructure will include numerous road projects, bridge structures, tunnel constructions an