SEMA is a leader in the construction of highways and bridges and has participated in the building of major roadway projects valued at over $140 million. We offer a special blend of experience and efficiency that enables us to safely construct, rehabilitate and replace civil infrastructure projects to exact specifications. SEMA has an extensive background working with a diverse range of clients including government agencies, municipalities, developers and private landowners, providing us with a measurable advantage in managing roadway projects. From local thoroughfares to major interstate highways and technically challenging road alignments, we are experts in roadway construction. Our business rides on it.