Each Item Number is further subdivided by four-digit Descriptive Code Numbers (e.g., “7001 EXCAVATION (ROADWAY)” continuing the example of Item 110 Excavation), representing different ways to bid an item; whether it be different units of measurement, different sizes of the item, different types of the item, etc. It is important that the correct Descriptive Code Number be selected. Bid Items are reflected in the Estimate and Quantity (E&Q) sheet in the project plans and bid inserts in the proposal (see for additional information regarding the E&Q).

Contractors use the bid inserts to prepare their bids, thus an incorrectly selected descriptive code can result in costly change orders and negotiations with the contractor.

Descriptive code example

. See the following example explaining the difference between the 2024 Specification Bid Items 247-7136 and 247-7052. Item 247 designates Flexible Base. The descriptive codes, 7136 and 7052, call for identical material to be delivered to the project site; however, the methods of measurement and payment are different for each item.

It is important that the designer evaluate each situation before selecting the desired descriptive code, because one item may require more personnel and material or place unnecessary restrictions on the contractor that will result in higher bid prices.

For a listing of all current Bid Items refer to the TxDOT.gov .

If there is no suitable Descriptive Code Number that accurately describes the work needed to be performed by the contractor (e.g., a specific depth of base and asphalt pavement removal under Item 105), the designer may submit a new Bid Code request through the TxC Specification Request Form.

The designer should submit the form for new codes as early as possible in the PS&E development.

Refer to the for additional information on accessing and submitting the Specification Request Form.