WINTER OPERATIONS ’07-’08

SALT STORAGE CAPACITY STORAGE CAPACITY 8 Districts, 102 locations 8 Districts, 102 locations Statewide – 92,170 tons Statewide – 92,170 tons Average shed capacity 811 tons Average shed capacity 811 tons Median shed capacity 400 tons Median shed capacity 400 tons

Salt Storage Heavy Timber Construction Heavy Timber Construction 400 Ton typical capacity 400 Ton typical capacity

Salt Storage 3,450 ton capacity with wings for brine maker and loader storage at Strang in S.E. Nebraska. 3,450 ton capacity with wings for brine maker and loader storage at Strang in S.E. Nebraska. Several other locations have comparable buildings. Several other locations have comparable buildings.

Salt Storage Concrete/Wood Dome Concrete/Wood Dome 13,200 ton capacity – Omaha, Gothenburg 13,200 ton capacity – Omaha, Gothenburg

Salt Usage 50,000 tons were used to fight December Storms. Some locations ran out of salt. Managers were getting nervous!

Salt Usage Total ’07-’08 Contract purchases 115,364 tons Total ’07-’08 Contract purchases 115,364 tons Delivered by truck from Kansas Delivered by truck from Kansas Additional 1,500 tons by rail from Utah and Kansas. Additional 1,500 tons by rail from Utah and Kansas. 825 tons Ice Slicer was ordered to make up for salt shortage. 825 tons Ice Slicer was ordered to make up for salt shortage. A new contract specification is being developed to address delivery issues. A new contract specification is being developed to address delivery issues. Some fabric covered structures planned for this year to increase storage capacity. Some fabric covered structures planned for this year to increase storage capacity.

Salt Usage Occasionally, agricultural products are added! Occasionally, agricultural products are added!

Liquids Brine Brine 53 Brine makers Statewide 53 Brine makers Statewide ??Guesstimated?? Production: 5 million gal. ??Guesstimated?? Production: 5 million gal. ??Guesstimated?? StorageCapacity: 4 million gal. ??Guesstimated?? StorageCapacity: 4 million gal.

Liquids Ice Ban Ice Ban Caliber Caliber Geomelt Geomelt Some problems reported Some problems reported Usage and practices not consistent Usage and practices not consistent

FAST Added Vaisala Friction sensor to control existing manually controlled Spray System on I-80 near Kearney. Added Vaisala Friction sensor to control existing manually controlled Spray System on I-80 near Kearney. Surface temperature and wind speed sensor inputs are included in the algorithm. Surface temperature and wind speed sensor inputs are included in the algorithm.

Live video of the bridge provides additional verification of conditions and operation.

Screen shot of Spray History

Relationship between ice or snow thickness and grip.

FAST 2008 Three additional FAST systems are planned for I-80 bridges: Three additional FAST systems are planned for I-80 bridges: Shelton Shelton Aurora Aurora Giltner Giltner Accident history is used to decide where FAST is justified. Accident history is used to decide where FAST is justified.

In 2007, NDOR joined the Pooled Fund MDSS

Three Districts participated in the first season. Three Districts participated in the first season. 34 routes in the system 34 routes in the system 120 Users trained 120 Users trained Half-day intro in November Half-day intro in November Two-hour hands-on sessions in January Two-hour hands-on sessions in January Good receptivity to MDSS by users Good receptivity to MDSS by users Eight Iwapi AVL units in place. Eight Iwapi AVL units in place. Plan to add more districts, routes, users, and AVL units for next season Plan to add more districts, routes, users, and AVL units for next season MDSS Highlights

MDSS Regional Product Showcase Omaha, NE Omaha, NE May 28, 2008 May 28, 2008 No registration fee! No registration fee! Demonstrations Demonstrations Meridian PFS and Colorado DOT Meridian PFS and Colorado DOT NCAR and City of Denver NCAR and City of Denver DTN/Meteorlogix and Illinois DOT DTN/Meteorlogix and Illinois DOT IWAPI IWAPI Intelligent Devices, Inc. Intelligent Devices, Inc. For more information or to register: For more information or to register:

Thank You!