MD 355 Crossing
Clark Civil will lead an effort to design and construct the MD 355 Crossing in Bethesda, MD. The crossing will be comprised of a new below-grade pedestrian tunnel under Rockville Pike (MD 355), connecting the National Institutes of Health campus with the Walter Reed National Military Medical Center campus. The team also will construct a 49-foot-diameter, 128-foot-deep shaft with a 30-foot-long connector tunnel into the existing Medical Center Metro. The shaft will contain a new elevator system allowing passengers to access the Metro from the Walter Reed campus.