TULSA, Oklahoma - City of Tulsa street crews have been busy since Wednesday evening applying salt to bridges and hills. Officials say crews will work into Thursday morning treating roads and streets.

Officials say Tulsa has 49 truck-mounted salt spreaders as well as 12,000 tons of salt on hand to treat roads across the city.

Crews are assigned to 35 specific routes totaling 1,770 lane-miles.

Officials say during their winter weather response, the first focus is to clear city arterial streets for emergency responders. After arterial streets are clear, the second focus then moves to residential or collector streets near hospitals, schools and areas with steep hills. 

The City of Tulsa has the list of maps it uses for arterial streets, collector streets, schools and steep hills on its City of Tulsa website.