Brian D. Merrill



Brian Merrill joined WJE in 2013, bringing thirty years of experience as a civil/structural engineer in the area of bridge design, construction, and maintenance; construction materials; forensics; structural condition assessment; and structural repairs. His background includes ten years of bridge design work and nineteen years of bridge construction and maintenance experience.

Prior to joining WJE, Mr. Merrill spent twenty-seven years with the Texas Department of Transportation’s (TxDOT) Bridge Division, serving the last thirteen years as the State Bridge Construction and Maintenance Engineer. While at TxDOT, he led their decade-long effort to address alkali-silica reaction (ASR), developed their standard specifications for bridge construction and maintenance, chaired their Structures Research Advisory panel, addressed issues related to post-tensioning and grouting, and represented TxDOT on a national level regarding ASR, grout for post-tensioning, and bridge maintenance. During Mr. Merrill’s career, he has conducted condition assessments on more than five hundred bridges across the state of Texas.


Bridge Engineering

  • LBJ Express - Dallas, TX: Analysis of straddle bent cracking
  • SH 99 - Houston, TX: Routine inspections of more than 150 bridges, more than 130 retaining walls, and more than fifty other ancillary structures over four-year period
  • Harbor Bridge - Corpus Christi, TX: Bridge replacement peer review and steel corrosion evaluation
  • Various Bridge Lifting Projects - TX, OK, AR, LA, MS, and FL: Subconsultant to Gibson and Associates


Failure Investigation

  • Hotel - Austin, TX: Investigation of portico collapse
  • Chemical Warehouse - LA: Assessment of failed joist girder-to-column connections during construction of warehouse
  • Commercial Bldg. - Austin, TX: MSE wall collapse investigation
  • Rayse Creek Bridge Collapse - Mt. Vernon, IL: Investigation of steel H-piling failure


Structural Evaluation

  • Sam Rayburn Powerhouse Switchyard - Jasper TX: Investigation of concrete foundation elements experiencing corrosion-related distress
  • Hotel - Austin, TX: Structural assessment and repair design for balconies
  • 201 N. Main - Taylor, TX: Assessment of 1911-era timber and steel-framed building
  • Port Houston - TX: Assessment of several wharves/piers and bulkheads


Repair and Rehabilitation

  • Cow Bayou Swing Bridge - Bridge City, TX: Rehabilitation design and construction administration of historic swing bridge
  • Frank Erwin Center - Austin, TX: Assessment and retrofit design for scoreboard structural modifications

Condition Assessment

  • Queen Isabella Causeway - Port Isabel, TX: Condition assessment of the bridge deck, bridge expansion joints, and all substructure elements, including corrosion-related
  • Voestalpine Facility - Portland, TX: Corrosion assessment of dockside and clarifier systems 
  • St. David’s Medical Center Garage No. 2 - Austin, TX: Assessment of distress in
  • two-year-old facility
  • JFK Memorial Causeway - Corpus Christi, TX: Condition assessment and service life modeling of bridge’s segmental boxes
  • SR 34 over Mississippi River - Burlington, IA: Condition assessment and fracture-critical inspection of steel cable-stayed bridge
  • Mopac Sound Walls - Austin, TX: Design peer review, nondestructive evaluation, structural analysis, and development of repair/retrofit recommendations


Construction Troubleshooting

  • Waco Suspension Bridge - Waco, TX: Development of temporary support system to be used during cable replacement
  • TexRail - Fort Worth, TX: Bridge roll-in design
  • I-65/I-22 - Birmingham, AL: Analysis of curved plate girder erection


Materials Evaluation and Research

  • Oklahoma DOT: End-region cracking of prestressed concrete girders
  • Grout Void Detection: In-house research using nondestructive evaluation methods
Professional Affiliations

American Concrete Institute (ACI),
Associated General Contractors (AGC) of Texas
American Segmental Bridge Institute (ASBI)
Post-Tensioning Institute (PTI), Fellow


Professional Engineer in TX
Fracture Critical Inspection/Steel Bridges (NHI 130078)
Safety Inspection/In-Service Bridges (NHI 130055)


University of Texas at Austin
Bachelor of Science with Honors, Civil Engineering, 1983