The CPUC Rail Crossings and Engineering Branch maintains an inventory database of highway-rail crossings in California. There are just over 10,000 open crossings included in the state inventory as of June 2014.
A spreadsheet listing crossings in CPUC inventory database is provided below:
CPUC Rail Crossing List
See the 'Description' tab in the spreadsheet for further details.
This list is provided for information only. The information contains some inaccuracies. Comments may be sent to firstname.lastname@example.org with Subject: CPUC Rail Crossing List.
Crossing DOT Number
The U.S. Department of Transportation (U.S. DOT), through its Federal Railroad Administration (FRA), uses a numbering system to identify all railroad crossings (and a few light rail crossings) throughout the United States. The U.S. DOT crossing number consists of 6 digits followed by a letter.
The U.S. DOT numbers can be queried by visiting FRA's crossing inventory website.