Site work is ramping up in southwest Louisiana following the official groundbreaking April 29, 2026, of the I-10 Calcasieu River Bridge Replacement project, a $2.3 billion public private partnership aimed at modernizing one of the nation's most critical freight and energy corridors.
The project replaces the existing Calcasieu River Bridge, a 1950s-era structure that predates Interstate 10, with a new high capacity crossing designed to meet current seismic safety and traffic demands. Construction activity will begin immediately with utility coordination, roadway improvements and early foundation work while the existing bridge remains in service through the anticipated opening of the new structure in 2031.
The new bridge will be constructed just north of the existing alignment and will carry three 12 ft. travel lanes in each direction with an auxiliary lane, 12 ft. shoulders and enhanced lighting. Engineers also reduced the bridge's height from 152 ft. to approximately 75 to 95 ft., improving constructability and long term maintenance access. Tolling will be fully electronic.
While bridge construction advances, crews also will reconstruct approximately 5.5 mi. of I-10 through the corridor, replacing aging pavement and multiple structures. The scope includes adding one travel lane in each direction to eliminate chronic bottlenecks and improve freight movement across Calcasieu Parish.
Additional work elements include construction of a new elevated Sampson Street interchange designed to remove at grade railroad crossings and improve traffic reliability. An eastbound service road system between PPG Drive and Sampson Street will be built to reduce congestion and merging conflicts on the mainline. The I-210 westbound ramp also will be reconstructed to increase safety and capacity.
Active transportation improvements are built into the construction program with a $10 million allowance for pedestrian and cyclist facilities adjacent to the bridge. The project agreement also includes dedicated maintenance of the bridge and roadway for 50 years, shifting long term performance risk to the private partner.
The Calcasieu River crossing is a vital link for regional industry and the national energy supply chain, providing access for heavy truck traffic serving petrochemical facilities, ports and rail connections along the Gulf Coast. Project planners estimate the work will generate more than 16,000 jobs during construction and related activities while producing approximately $3.29 billion in regional economic impact and $1.9 billion in labor income.
The project is being delivered using a public private partnership model that combines federal and state funding, private investment and toll revenue. Under the agreement, the state of Louisiana retains a 15 percent equity share in tolling revenue that will be reinvested in transportation infrastructure.
Construction staging and traffic management will be a key component of the work due to the corridor's heavy daily traffic volumes. Strategic upgrades to the existing bridge and ramps will be performed to maintain operations during peak construction phases. Motorists can expect periodic lane shifts and traffic pattern changes as work progresses.
The original Calcasieu River Bridge opened to traffic in 1952 as part of U.S. Highway 90 before being incorporated into I-10 in the 1960s. Built under standards of a different era, the structure no longer meets modern design or capacity requirements, prompting decades of planning for replacement.
The replacement project stretches from Ryan Street in Lake Charles to the I-210 and I-10 interchange in Westlake and represents the largest transportation infrastructure investment in Louisiana history.
Construction managers said early phases will focus on earthwork, foundation installation and setting the framework for major bridge components before superstructure construction accelerates. Full completion is targeted for 2031.
For more information, visit i10calcasieubridge.com. CEG
