There are two methods for measuring and paying for temporary illumination according to Item 617, "Temporary Roadway Illumination."

By the Month.

Measurement and payment by month is the most frequently used method of paying for temporary lighting. This method is also the most expensive for the state, as the contractor is forced to include in his bid unexpected costs for contingencies such as knocked down poles. For the monthly method, the plans and specifications must be precise, because variations require field changes. Roadway illumination assemblies, temporary wiring, foundations, electrical services, and all other materials and labor are subsidiary to this item.

By Each.

Temporary lighting may be measured and paid for by each unit or part of a unit. When using this method, the measurement is by each roadway illumination assembly installed or relocated. Temporary wiring, foundations, electrical services, and all other materials and labor are subsidiary to this item.

TxDOT is responsible for electricity used by the temporary lighting.