The U.S. Fish and Wildlife Service received of land in the Sweetwater Marsh from the Santa Fe Land Company to mitigate environmental damage, and the lawsuit reached a settlement. Construction resumed in early November 1989. The halt meant that the project had to be rebid; one bridge was partially completed, and was thus known as "the bridge to nowhere". The eastbound roadway opened to traffic on December 10, 1990, at an approximate cost of $89.3 million (about $ in dollars). In 1992, during the construction process, mastodon bones and stone hammers were found. The items were dated to be older than 120,000 years old and may be some of the earliest signs of human settlement in North America.</ref> Other animal bones were found at the site, near Reo Drive in National City, including those of a bison, a camel, a gopher, and horses. The westbound roadway was completed in July 1992.