Database of State DOT Concrete Pavement Practices The ACPA Database of State DOT Concrete Pavement Practices contains 260+ variables from 60 locations.   Click here to launch the States Practices Database web page. Due to the complexity of the database interface, please allow a few moments for it to launch. If you are unfamiliar with new interface of the States Practices Database web page, please click here to read direction on how to quickly and easily build custom tables full of the data you want. If our database does not contain the variable(s) you wish to query or you wish to obtain more detailed information or specifications, click here to visit a Google Co-op site capable of search all state DOT sites simultaneously.