Alison Catarella Michel

President/Transportation Engineer


Ms. Catarella Michel began working at Urban Systems, Inc. as an Engineer Intern in 2001. She became a Professional Engineer in 2002, an Associate of the firm in 2003, and a Principal in 2006. In 2012 the firm reorganized, and she became the President. Ms. Catarella-Michel responsibilities include project management, design, management and training of the firm’s technical staff as well as business development and contract negotiations.

Ms. Catarella Michel has over twenty years of experience in Traffic Engineering and has expertise in traffic signal designs, traffic impact analysis, traffic control device plan design, intelligent transportation systems, and regional transportation microscopic simulation modeling. She has experience in a wide range of traffic and transportation studies for safety, congestion alleviation, interchange improvements, complete streets, and multi-modal facilities for a variety of clients.

Ms. Catarella Michel co-authored an article published in the September 2001 ITE Journal entitled “A Method for the Simulation of Coordinated Lead-Lag Left-Turn Phasing in CORSIM”. She also co-authored an article that was published in the January 2006 Journal of Transportation Engineering ASCE entitled “Louisiana Highway Evacuation Plan for Hurricane Katrina: Proactive Management of a Regional Evacuation. She is a Fellow of the Institute of Transportation Engineers where she is active on the Section, District and International levels. Ms. Michel is also a 2023 graduate of the SBA T.H.R.I.V.E. Emerging Leaders Reimaged program.


BS Civil Engineering
Louisiana State University
Baton Rouge, LA

Community Affiliations

Lakeview Civic Association, Past Zoning Committee Member
Edward Hynes Charter Parent Teacher Organization, President 2012-2014
Woman’s Professional Council, Member


Professional Engineer / Civil Engineering / Louisiana (No. 30261)
Professional Engineer / Civil Engineering / Mississippi (No 16171)
Professional Engineer / Civil Engineering / Alabama (No. 27740)
Professional Traffic Engineer / California (No. TR 2498)
Professional Traffic Operations Engineer (No. 1023)
Professional Transportation Planner (No. 626) Road Safety Professional 1 (No.115) Road Safety Professional 2i (No. 148)

NCEES Record No. 24931

Professional Affiliations

Institute of Transportation Engineers – Fellow
Deep South Section Past President 2003
Deep South Section Representative 2004
Goldman Sachs 10K Small Business Cohort Graduate

Leadership ITE 2016

SBA T.H.R.I.V.E Emerging Leaders Reimaged Program 2023 Graduate

Nicole H. Stewart

Vice President/Transportation Engineer


Ms. Stewart joined Urban Systems, Inc. in December 2005 as an Engineer Intern during the aftermath of Hurricane Katrina. In 2007, Ms. Stewart was promoted to an Associate of the firm. She became a Principal and Vice President of Urban Systems, Inc. in 2012. Ms. Stewart’s responsibilities include project management , design and training of the firm’s technical staff.

Ms. Stewart has extensive experience in Traffic Engineering and Transportation Planning. She has worked at all levels on a variety of projects for both public and private clients. Ms. Stewart’s expertise includes traffic control device plan design, traffic signal design, traffic impact analyses, signalized and unsignalized intersection analysis, and traffic signal timing studies. Ms. Stewart has experience in roadway and subsurface drainage design as well as construction management.


BS Civil Engineering
Southern University A&M College Baton Rouge, LA
BS Physics
Xavier University of Louisiana
New Orleans, LA

Community Affiliations

Southern University and A&M College Civil Engineering Council of Visitors
St. Mary Academy Alumnae Association


Professional Engineer / Civil Engineering / Louisiana (No. 34750)
Professional Engineer / Civil Engineering / Mississippi (No. 30182)
Professional Traffic Operations Engineer (No. 2923) Professional Engineer/ Civil Engineering / Texas (No. 23935)

Professional Affiliations

Institute of Transportation Engineers
Deep South Section ITE Past

President 2015
2018 Emerging Leaders Institute
LED CEO Roundtable 2022