For the purpose of program planning and analysis, transportation improvements are classified into categories, generally defined by the type of "product" they produce. This classification system improves the department's ability to develop system objectives and performance measurements. These classifications are:

Bridge Preservation
This classification includes work, which is designed to keep the existing bridges functioning, and in a state of good repair, including work which rehabilitates or replaces existing bridges to current design standards. Program categories within this classification include bridge rehabilitation and replacement, bridge capital maintenance, bridge management, local bridges, NJ TRANSIT bridges, and railroad overhead bridges.

Bridge and Roadway Preservation
This classification includes work which is designed to keep both existing bridges and roadway in a state of good repair. Under this category, in addition to roadway improvements, existing bridges within the project limits will be rehabilitated or replaced, bringing bridges to current design standards.