College graduation rates in the United States are low in both real and relative terms. This has left all stakeholders looking for novel solutions while perhaps ignoring extant but underused programs. This article examines the effect of "summer bridge" programs, which have students enroll in coursework prior to beginning their first full academic year, on associate's and bachelor's degree completion. We make use of the Beyond Postsecondary (BPS) transcript data as well as data from one large university system. Our analysis utilizes propensity score matching to account for selection effects among students. We find that at community colleges and less selective 4-year colleges, students who attend bridge programs are 10 percentage points more likely to finish within 6 years. We discuss our findings in the context of how colleges might better use their existing initiatives to improve student outcomes, and in light of recent findings from a randomized controlled trial study.