Lullwater Bridge and Terrace Bridge are the only bridges across the watercourse that were built to handle automobile traffic. Lullwater Bridge is located just downstream of the Boathouse, on Prospect Park's eastern side. The current metal span, built in 1905, replaces an oak bridge on the site that was originally constructed in 1868. Further downstream, Terrace Bridge carries Well House Drive over the watercourse just before it empties into the lake. Built in 1890, Terrace Bridge also replaced an earlier wooden span, and it contains cast-iron tracery and brick vaults underneath, which have since deteriorated. It was so named because it was supposed to overlook the unbuilt Refectory, which had been canceled following the 1873 financial crisis.