The City of Laredo - Bridge System provides convenient and safe crossing points to the residents and tourists of the United States and Mexico. In addition, the bridge system facilitates the crossing of freight and import and export trade. The City of Laredo - Bridge System allows commercial and noncommercial vehicles to pass through its lanes. It is a part of the city of Laredo in Texas. The city governs an engineering department that oversees various capital improvement projects. The department coordinates with other departments and the local, state and federal agencies. The engineering department inspects construction sites and is responsible for improving water, air and environment quality through several programs.