Stanley Consultants Selected for Louisiana I-12 Widening Design

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Engineering firm designing the widening of 3.5 miles from US 90 to LA 21 in St. Tammany Parish

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Stanley Consultants has been selected by the Louisiana Department of Transportation and Development (LADOTD) to design the widening of a 3.5 mile stretch of Interstate 12 in St. Tammany Parish. Stanley Consultants is a worldwide consulting engineering firm with Louisiana offices in Baton Rouge and New Orleans.

Stanley Consultants is providing roadway design services to widen the interstate from two to three lanes in the east and west-bound lanes. The roadway will be widened to the inside with interior lanes constructed in the existing grass median. In addition, auxiliary lanes will be added in each direction of the heavily traveled roadway, connecting the LA 21, Pinnacle Parkway, and US 190 exits. The firm will also provide design services to widen the 1,500-foot-long Tchefuncte River bridge, as well as the LA 21 overpass.

St. Tammany Parish is one of the fastest growing parishes in Louisiana. Over 78,000 vehicles a day traverse the segment, which runs from LA 21 to US 190 in Covington. The additional lanes will increase capacity, improve safety, and enhance mobility.

Design is under way and scheduled to be completed in March 2018. Construction will commence following completion of design.

With a focus on transportation and water / wastewater, Stanley Consultants provides full-service capabilities including civil, structural, mechanical, commissioning, electrical, environmental, architectural, cost estimating, specification, and construction management services from its offices in New Orleans and Baton Rouge. The Louisiana offices provide clients with a local presence, as well as access to the nationally recognized engineering firm’s full spectrum of services.


About Stanley Consultants: Founded in 1913, Stanley Consultants is a global consulting engineering firm that provides program management, planning, engineering, environmental and construction services worldwide. Recognized for its commitment to client service and a passion to make a difference, Stanley Consultants brings global knowledge, experience and capabilities to serve clients in the energy, water, transportation and Federal markets. Since 1913, Stanley Consultants has successfully completed more than 25,000 engagements in all 50 states, U.S. territories, and in 110 countries. For more information on Stanley Consultants, please visit

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Mary Jo Finchum
Stanley Consultants
+1 (563) 264-6485
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