Originally found ineligible in both the 1986 and 2003 Caltrans masonry arch surveys. It was re-evaluated in 2005 and found eligible. It was nominated to the National Register in 2011 but rejected by the Keeper as ineligible. In June 2011, it was designated as a City of Napa local landmark.
Napa Creek Bridge is an earth-filled, closed-spandrel masonry-arch bridge consisting of one span. The spandrel walls are comprised of square-cut stone laid in irregular courses. The original stone railings have been removed and replaced with decorative metal picket railings.