Montana Expansion v0.9.9.2 1.40

Changelog v0.9.9.2
fix speed limit between Helena and Great Falls -
adjust police cars for Glendive to Billings ST on the Billings exit, little easier to make your left now -
a few adjustments north of Shelby -
replace all cattle guards for the newer models -

Changelog v0.9.9.1 -
Interstate 15 From Great Falls to Butte re-build started -
Helena added with 2 companies in town and 1 custom company added north towards Great Falls -
Custom company added at Welker Farm in Shelby -
Removed 5 companies in Great Falls -
Replaced Coastline Mining in Circle with updated depot, this mine will be completely re-built in the future -
Great Falls will take some time to finish, but have a decent start on it and it is playable -
A few signs were removed because of sign re-work, these and more will be added in near future -