New bridge design withstands salt damage, ensures 100-year lifespan.
A new bridge was built over the Cheboygan River in Michigan to replace an old one damaged by de-icing salts. The design process considered various needs like pedestrians, snowmobiles, boats, and utilities. A precast arch structure was chosen for its functionality and aesthetics, saving time during construction. The bridge was designed with a drainage system to prevent damage from salt and is expected to last 75 to 100 years.