practice leaders


rick carle, P.E. 

After graduating from Texas A&M University - Kingsville in 1999, Rick began his career as a civil and structural engineer in the private sector.  He joined Aguirre & Fields in 2013 and has over 16 years of experience throughout Texas in public and private road, bridge, commercial site and aviation projects. Rick has been a strong asset to the Aguirre & Fields structural practices in Texas and Oklahoma.


steven esche, P.E. 

Steve is the Chief Structural Engineer of Aguirre & Fields and has been providing structural engineering in the civil and transportation fields throughout Texas since 1996. He has an extensive background in PS&E and design-build for major interchange projects, direct connectors, urban and rural bridges, and retaining walls. Steve holds a BS and MS in Civil Engineering from Texas A&M University.


ralph nguyen, p.e.

Ralph graduated from the University of Oklahoma in 1999 and leads Aguirre & Fields Oklahoma operations. Prior to joining Aguirre & Fields, he worked with CED, ODOT, and OTA on a variety of structure types and replacements, rehabilitations, inspections and ratings. Ralph's experience includes tenure with the Engineering Department of Oklahoma County and with ODOT 

transportation engineering

john mutchler, P.E.

After graduating from the University of Houston in 1999, John started his engineering career in the TxDOT Galveston Area Office prior to joining the private sector.  He has over 14 years of experience in a broad range of transportation projects throughout Texas. John also has more than 12 years of military experience and holds an active commission as a Captain in the Army National Guard.  He has been an integral part of the organization and growth of Aguirre & Fields' transportation practice.


mark schluter, P.E.

Mark has 36 years of transportation infrastructure experience and leads Aguirre & Fields’ business development and marketing efforts.  Prior to joining Aguirre & Fields, he served in a variety of capacities with the TxDOT Fort Worth and Wichita Falls Districts, including leading hundreds of personnel as Area Engineer and Director of Transportation Operations.  Mark is a graduate of Texas A&M University.

construction services

chris bilich, P.E.

Chris holds a BS in Civil Engineering and an MS in Structural Engineering from The University of Texas at Austin.  He has over 15 years of experience in construction management and construction engineering/inspection for transportation infrastructure projects in Texas, Oklahoma, Florida, and Louisiana.