SULLIVAN, DONAHOE & INGALLS, P.C.
Expert Engineers, Surveyors, & Land Planners
Serving Fredericksburg, VA and the surrounding area since 1965.
About Us![](https://sdi-pc.com/wp-content/uploads/2022/08/bg-55.png)
55+ Years Experience
Since 1965, SDI has grown to become one of the top civil engineering and land surveying firms serving Fredericksburg and the surrounding area.
We pride ourselves on the expertise of our staff, quality of our services, and on seeing projects through from concepts to final design and construction.
Quality of our service is guaranteed when you partner with SDI. Benefit today from our cutting-edge technologies to our decades of knowledge and experience.
Who We Serve![](https://sdi-pc.com/wp-content/uploads/2022/08/icon-checkmark.png)
Registered Professional Engineers
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Licensed Professional Surveyors
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Cutting-Edge Technology
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Innovative Solutions
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Locally Owned & Operated
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Full Range Services
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Quality Guaranteed
Explore Our Work:
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