About

Modjeski and Masters, Inc. (M&M), a 100% employee-owned company, is a leader in the design, inspection, and rehabilitation of all types of bridges, highways, and tunnels. With 230 staff spread across 17 offices, we have completed numerous award-winning transportation projects throughout the U.S. and abroad. M&M is ranked #17 on the 2023 Engineering News-Record (ENR) Top 25 Bridge Design Firms list and is celebrating our 130th anniversary. We offer integrated in-house structural, electrical, mechanical, highway, and construction engineering disciplines under a unified management approach. M&M’s breadth of services includes (but are not limited to): new and rehabilitation designs; inspection services; field instrumentation and nondestructive testing; load capacity evaluations; movable span balancing and rope tensioning; maintenance and protection of traffic; lighting design; erection analysis; bridge security and vulnerability analyses; vessel collision assessments; scour analyses; suspension cable and suspender rope investigations; fatigue evaluations; emergency response assessments and forensic studies; seismic assessment and design; and bridge engineering research, code, and course development.