This iron bridge spans the Perfume River and signified, at the time of it's construction, a modernization of Vietnam under the last imperial dynasty. Now, it has two lanes of traffic and sidewalks outside of the roadway so that you can safely walk across the bridge. We crossed it several times daily on our bikes. The bridge is lit up beautifully at night. Cars seem to be prohibited at certain times - or all the time due to the narrow lanes. We were on bikes so I don't know the details.