Welcome to the newly enhanced SDDOT “Next Generation 511 Travel Information Service”! The SDDOT 511 system is designed to help travelers access information regarding road conditions, construction, and severe weather, via the Web or phone—24/7 to make their travels in South Dakota more enjoyable and safer. SDDOT continually works to improve the 511 phone system’s performance based on citizen feedback and usage statistics. SDDOT will provide updates from time to time through press releases as improvements and enhancements are made to the system. Your suggestions and recommendation are valuable to this process, please Contact Us.