Serving the Mid-Atlantic for 50 years

Resourceful. Hands-On. Collaborative. In 1975, Jim Montgomery (recognized bridge engineering expert), James Duffy, and Joe Nawrocki founded the firm now known as Wallace Montgomery, originally established as Duffy & Associates (D&A). The firm initially specialized in bridge engineering, construction management and inspection services for Maryland’s counties and municipalities. Their first project, awarded in 1975, was the Watersville Road Culvert for Carroll County, MD. D&A also provided construction inspection services for the relocation of Milford Mill Road for the Mass Transit Administration (MTA) and landed its first major project with the State Highway Administration (SHA) for the US 219 Bridge over Deep Creek Lake.

A turning point came in 1985 when John Wallace (leader in construction engineering and inspection) joined as a Partner.  This prompted the firm to rebrand as Wallace, Montgomery & Associates, LLP (WM&A). In the same year, WM&A secured its first major contract with the SHA for statewide bridge inspection services. This expansion was further strengthened with the promotion of Dave Abercrombie to Partner and the addition of highway engineering and water resources disciplines.  Two years later, Ernie Rehmeyer (accomplished highway engineer) also joined WM&A as a Partner, further bolstering the firm’s expertise.

Established. Respected. Trusted Advisor. In 1998, Frank Waesche (former MTA Chief) joined the firm bringing valuable leadership and expertise. Earlier, in 1990, WM&A secured its first major interchange project with the SHA for the US 50/301 Interchange at Old Mill Bottom Road, located just west of the Bay Bridge. Three years later, in 1993, Stuart Taub (respected bridge engineer) became a Partner, further strengthening the firm’s leadership.

By 1995, WM&A achieved another significant milestone, securing its prime contract with the MTA. This included providing construction engineering, surveying, and structural design services for several key projects including the Central Light Rail. In 1999, the firm expanded its reach by securing its first contract with the Maryland Transportation Authority (MDTA), providing structural design services. Throughout this period, WM&A earned a reputation as a recognized expert, particularly for its work on timber and historical covered bridges.

Progressive. Multi-Disciplinary. Growth. In 2001, Tony Mawry (progressive highway engineer) became a Partner at WM&A, further strengthening the firm’s leadership and expertise in highway engineering. In 2003, the firm expanded its service offerings with the launch of a Utility Engineering department, followed by a Traffic Engineering department in 2004. By 2007, WM&A’s growth continued with the addition of two new departments:  Transportation Planning and Plats & Surveys.

The firm reached significant milestones in 2008. It secured its first design-build project for Middletown Road in Charles County, Maryland and won its first major prime contract with the Delaware Department of Transportation to provide guardrail inventory services. Additionally, WM&A was awarded the Hatem Bridge Rehabilitation project with MDTA and designed its first roundabout at MD 2/Friendship Road in Anne Arundel County for SHA. These achievements marked the firm’s growing expertise in innovative intersection and interchange design, reinforcing its reputation for delivering high-quality designs and solutions.

Transformative. Diversified. Innovative. In 2011, the firm was awarded its first SHA design-build project for the I-95 Contee Road Interchange. The following year, the firm rebranded as Wallace Montgomery (WM) and played a key role in the I-64/US 15 Zion Crossroads Design-Build project, which featured Virginia’s first Diverging Diamond Interchange.

In 2013, WM expanded its presence by opening its first Delaware office and establishing an Environmental department.  The next year, Matt Allen (professional traffic engineer) became a Partner, and WM launched a GIS department while also opening its first office in Virginia.

In 2015, the firm expanded into Mechanicsburg, PA, and earned a spot on ENR’s list of Top 500 Design Firms. In 2016, Wallace Montgomery secured its first contract in Pennsylvania with the City of Harrisburg and its first contract with the District of Columbia Department of Transportation (DDOT) for the preliminary design of Lincoln Trail.  By 2017, WM was recognized by Inc. Magazine as one of the fastest-growing private companies in America.

In 2019, Dave Borusiewicz (experienced structural engineer) was named a Partner, and WM secured its first Virginia Department of Transportation (VDOT) design-build project for the Albemarle Intersection Bundle.

Resilient. Forward-looking. Successful. Wallace Montgomery responded to the challenges of COVID-19 by adopting a flexible remote work model, allowing employees the option of in-person, remote, or hybrid work setups. In 2022, the firm expanded its Construction Engineering and Inspection (CEI) services into Virginia, securing its first CEI contract as a prime with VDOT in 2024. By this year, Wallace Montgomery was recognized as one of USA Today’s Top Workplaces and continued to rank among the top workplaces in the Baltimore Business Journal and Baltimore Sun lists.

WM operates from seven offices across four states serving state, county, and local agencies throughout the mid-Atlantic region.