IH-70 Ramp A
Life-Cycle Engineering Services | EXPANDED

Modjeski and Masters is pleased to announce the acquisition of structural engineering firm Summit Engineering Group, Inc. Our combined engineering prowess and respective technical skillsets will enable us to provide streamlined design and construction solutions to best meet client needs.

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We‘re wherever you need us to be

Modjeski and Masters has offices in multiple locations throughout the U.S. We're a part of the communities we serve, but with a global outreach. Our reputation for responding to the needs of our clients — from planned strategies to emergency situations — has established Modjeski and Masters as one of the world's premier bridge engineering firms. To begin your great bridge experience, contact a representative in the office most convenient to you.

Corporate Headquarters
Mechanicsburg, PA - Corporate Headquarters
100 Sterling Parkway, Suite 302
Mechanicsburg, PA 17050
Phone: (717) 790-9565
Toll-Free: (888) 663-5375
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Located Outside the United States?
Modjeski and Masters takes on projects of all sizes in other countries.
Call (717) 790-9565 for more information.

Regional Offices

Littleton, CO
10822 W. Toller Drive
Suite 330
Littleton, CO 80127
Phone: (303) 933-9114
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District Of Columbia
Washington, DC
955 L'Enfant Plaza SW
Suite 6312 - North Building
Washington, DC 20024
Phone: (202) 863-7045
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Edwardsville, IL
4 Sunset Hills Professional Center
Edwardsville, IL 62025-3760
Phone: (618) 659-9102
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New Orleans, LA
1055 St. Charles Avenue, Suite 400
New Orleans, LA 70130
Phone: (504) 524-4344
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St. Louis, MO
1800 Chouteau Avenue
St. Louis, MO 63103
Phone: (314) 588-8115
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New Jersey
Mount Laurel, NJ
133 Gaither Drive
Suite O
Mount Laurel, NJ 08054
Phone: (856) 608-7400
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New York
Poughkeepsie, NY
301 Manchester Road, Suite 102
Poughkeepsie, NY 12603
Phone: (845) 471-2630
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North Carolina
Raleigh, NC
333 Fayetteville Street
Suite 505
Raleigh, NC 27601
Phone: (919) 831-4765
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Philadelphia, PA
1341 North Delaware Avenue, Suite 308
Penn Treaty Park Place Building
Philadelphia, PA 19125
Phone: (215) 609-1990
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West Virginia
Charleston, WV
4510 Pennsylvania Avenue, Suite E
Charleston, WV 25302
Phone: (304) 965-1870
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