![Hardhat with blueprints](/content/dam/images/bridge/hardhat-with-blueprints.png)
TxDOT Specifications
Standard TxDOT Specifications for construction and maintenance of highways, streets, and bridges.
View TxDOT Specifications and Provisions![Construction of highway in Waco](/content/dam/images/roads/construction-of-highway-in-waco.png)
Materials
Material producer list, test procedures, technical advisories, and design (DB and DBB) schedules.
Materials guidance![](/content/dam/project-sites/hou610at69/images/planning-meeting.png)
Measure Twice calculator
TxDOT's Measure Twice calculator allows users access to a variety of calculators to help with measurements and equations for multiple aspects of construction, maintenance, and transportation.
Measure Twice application![CAD developer](/content/dam/images/people/office-employees/cad-developer.png)
![Archaeologist at dig site](/content/dam/images/people/txdot-employees-gen/archaeologist-at-dig-site.png)
![TxDOT crew examines poles](/content/dam/images/people/txdot-employees-gen/txdot-crew-examine-poles.png)
![Ditch maintenance](/content/dam/images/roads/ditch-maintenance.png)
![Highway warning sign - curve in road](/content/dam/images/signs-signals/highway-warning-signs.png)
![Insurance highlighted](/content/dam/images/reports/insurance-highlighted.png)
Certificate of insurance forms
You must provide proof of insurance prior to contract execution and throughout the life of your contracts. ACORD certificates are not accepted as proof of insurance.
1560 and 1950 forms![digital interface with pricing](/content/dam/images/reports/digital-interface-with-pricing.png)
Bid item averages dashboard
The bid item averages dashboard displays historical bidding information by bid codes for the past 24 months. Users can filter data and explore the historical cost of bid items across all statewide and local district letting projects.
Bid items and index![Bridge construction scene at dawn](/content/dam/images/people/construction/road-construction-surface-prep.png)