Gaelic Bridge crosses the Naer River, bringing water to Nimes and distributing it to public bathhouses, fountains and private houses. It is an important contribution made by the Romans to civilized and hygienic living conditions.
The Romans dug and built Gaelic Bridge for a clear and practical purpose-transporting fresh water.
Jiaer Bridge has a magnificent shape, and the three-story arch spans Jiaer Valley, which has a great influence on future buildings. The bridge is 49 meters high and 274 meters long, stretching for 48 kilometers, and there is a 50-kilometer-long water conveyance channel. Three-story arch bridge, with a sidewalk at the bottom and six arches, is about142m long, 22m high and with a spacing of16m-24m. There are 1 1 arches in the middle floor, which are about 243 meters long and have a spacing of 19 meters. There are 35 arches on the upper floor with a spacing of 4.6 meters. The total height of the upper floor is 7.4 meters (the height of the water passage), and the arch span is also very small, so the solid part accounts for a large proportion. The width of the bridge is 6.4 meters in the lower layer, 4.5 meters in the middle layer and only 3 meters in the upper layer, just below the sink. Building water tanks is one of the characteristics of urban construction in Roman times, which is a civil engineering that is still playing a role today. In order to resist the flood, the bridge has a slight bend, and a water corner is built at the bottom of the pier, and the wooden foot and the scaffold are connected with rough protrusions on both sides. The grade of the viaduct of Jia 'er Bridge is 1/3000, and the drop is about 17m. The overall design is to ensure that water can naturally flow to the city, so it is very necessary to build lishuiqiao at the intersection of rivers.
Surprisingly, only one of the six arches on the bottom floor crosses the Gar River, and the arches on each floor are different. At the same time, the Gal Bridge does not cross the Gal River at a right angle of 90 degrees.
Gaelic Bridge has been built and used for nearly 500 years, and it is still well preserved. It is the largest bridge on the Roman waterway. Gaelic Bridge, both in form and structure, fully embodies the grandeur and exquisite craftsmanship of Roman Empire architecture and is known as the "noblest movement" in architecture.