The following weight restrictions shall apply to city streets when posted with notice of such restrictions when determined by the director that such restrictions are necessary to prevent damage to the roadway:
A. Load Limit Per Tire: Load limit per tire is the weight in pounds allowable per inch of rated tire tread width as designated on the tire sidewall multiplied by the tire width in nominal inches as shown thereon or as converted from metric designation to the nearest one-half inch (1/2") as shown on the following table:
Tire Size; Nominal Inches
|
Allowable Weight Per Inch Of Rated Tread Width
|
Less than 8 inches (200 mm) | 300 pounds per inch |
8 inches or over (200 mm) | 350 pounds per inch |
9 inches or over (225 mm) | 375 pounds per inch |
10 inches or over (250 mm) | 400 pounds per inch |
The conversion factor for metric tread widths to inches of tread shall be metric times 0.04 equals inches.
B. Front Axle Allowance: An allowance of ten percent (10%) above the allowable weight as indicated on the table will be given for front axles only provided all other requirements are met.
C. Other Allowances: No allowance from the above load limits shall be given for any second rear axle suspended from the frame of the vehicle independent of the regular driving axle, commonly known as a rigid trail axle. The load distribution on any one axle of a vehicle shall be such that it will not load the tires on said axle in excess of the load limits specified.
D. Exceptions: School buses, transit buses, city/county maintenance vehicles, emergency vehicles, and motor trucks transporting perishable commodities or commodities necessary for the health and safety of local residents shall be allowed by special permit issued by the director. (Ord. 160, 3-20-2007)