cdot’s winter maintenance strategy
DESCRIPTION
CDOT’s Winter Maintenance Strategy. CDOT deicer program. Colorado CDOT History of our program Our evolution Situation today. Colorado. Between 37 th and 41 st parallels 104,247 square miles 40% high plains - 60% mountains Average Elevation 6,800’ low point 3,350’ 54 peaks > 14,000’ - PowerPoint PPT PresentationTRANSCRIPT
CDOT’s Winter Maintenance Strategy
CDOT deicer program
• Colorado• CDOT• History of our program• Our evolution• Situation today
Colorado
• Between 37th and 41st parallels• 104,247 square miles• 40% high plains - 60% mountains• Average Elevation 6,800’ • low point 3,350’• 54 peaks > 14,000’• Low humidity• Thin atmosphere• Huge influence from solar
radiation• Vast temperature swings• Snow falls range from < 20” to
>300” annually
Colorado
• 23,000 lane miles• 24 hour coverage• 14 hour coverage
• 900 plow units• 3000 CDOT employees• 1500 plow drivers• 12 hour shifts• No contracted snow removal• Some cities plow minor routes in
their city
CDOT’s Winter Maintenance Strategy
Evolution
Salt / Sand program
PM 10 issues
Sedimentation in mountain streams
Governor
History
0 5 10 15 20 25 30 35
-80
-60
-40
-20
0
20
40
Solution Freezing Point Curves
% MgCl2
% NaCl
% CaCl2
Concentration of Brine (weight%)
Te
mp
era
ture
F
Situation Today
FY 14 Budget vs FY 14 Spend
Material usage
Technology
LOS
Winter ‘13 – ‘14
FY 14 Budget - $60,402,000
FY 14 Spend - $72,215,000
Material usageSection Description Quantity UOM Total Cost
Statewide Calcium Chloride, 50# 41.00 BAG $415.54
Statewide Calcium Chloride, 50# 367.55 BAG $6,116.63
Statewide SALT, ROAD 50# 6,519.00 BAG $25,490.39
Statewide Abrasive Non-Sanding 7,749.11 TON $64,066.83
Statewide Abrasive Non-Mixed for Sanding 2,808.50 TON $44,667.83
Statewide SALT-SAND MIX 18,306.94 TON $550,970.86
Statewide Liquid Deicer 254,308.10 GLL $165,553.71
Statewide ICE SLICER RS 40,345.34 TON $3,974,021.61
Statewide LIQUID DEICER SPECIAL (Liquid+Salt-Sand) 5,144.50 TON $98,044.40
Statewide Caliber 1000 14,400.00 GLL $11,784.00
Statewide APEX, LIQUID DEICER 8,822,724.70 GLL $7,323,932.29
Statewide SAND SLICER 163,606.12 TON $4,555,557.25
Statewide ICE SLICER SB 8.00 TON $861.46
Statewide RAPID THAW 23.25 TON $2,495.21
Statewide CALIBER M-2000 15,726.00 GLL $15,557.06
Statewide ICE BAN 305 2,654,557.00 GLL $2,075,344.02
Statewide LIQUID DEICER SPECIAL (PRE-MIX) 3,774.03 TON $63,006.97
Statewide Salt Brine, Gallon 600,264.60 GLL $326,849.50
Statewide Solar Qwicksalt 1,167.25 TON $100,058.24
Statewide Ice-Melt, Snow, Ice, Sidewalk, 50#, -25F 195.00 BAG $3,892.00
Statewide SOS-TM, LIQUID DEICER, MAG CLORIDE 26% 24,156.00 GLL $29,112.58$19,437,798.38
Technology
Level of Service(LOS)
Level of Service (LOS)
Re-cap
David C. Wieder, P.E.Staff Maintenance ManagerColorado Department of Transportation15285 South Golden Road, Building #45Golden, CO 80403
Office (303) 512-5502Mobile (303) 548-5853
Questions / Contact Information