Oversize and Overweight Permit Threshold Screen

Reported as the excess on each rather than as a bare pass or fail. Width is the one federal number that holds almost everywhere at 8 ft 6 in on the National Network and most state systems. Height is entirely state law and runs from 13 ft 6 in to 14 ft 6 in depending on where you are. Length is regulated by trailer rather than by combination on the National Network with no federal overall limit, and states impose their own off-network. Gross weight is 80,000 lb federally on the Interstate system, subject to the axle and bridge-formula limits computed separately. Reporting the excess is the point, because permit fee schedules, escort requirements, travel-time restrictions, and route surveys all key off how far over you are in bands: a load two inches over width is a different conversation from one four feet over. A load 12 ft 0 in wide, 14 ft 6 in high, 75 ft long and 90,000 lb gross, screened against an 8 ft 6 in / 14 ft 0 in / 75 ft / 80,000 lb route, is 3.5 ft over on width, half a foot over on height, exactly at the limit on length, and 10,000 lb over on weight -- three permits, and at 3.5 ft over width most states will require escorts and restrict travel to daylight hours on weekdays. The half foot of height is the sleeper: small enough to overlook and the dimension that hits a bridge. A screen; the permitting state's own limits, its fee and escort schedule, and an actual route survey govern.

for each of width, height, length and weight: excess = actual - route threshold; a permit is indicated on every dimension whose excess is positive.

Oversize and overweight screening against the route's own four thresholds, entered rather than bundled because only width (8 ft 6 in on the National Network) and Interstate gross weight (80,000 lb) are federal while height and off-network length are state law, cited by name and not reproduced. The permitting state's limits, its fee and escort schedule, and an actual route survey govern.

Four subtractions on the user's own measurements against thresholds the user enters for the specific route; no state's limit table is reproduced.

Estimate. AHJ and licensed professional govern.

Field names used by the API: width_ft, height_ft, length_ft, weight_lb, width_limit_ft, height_limit_ft, length_limit_ft, weight_limit_lb, width_excess_ft, height_excess_ft, weight_excess_lb

• Federal numbers 8 ft 6 in width on the National Network; 80,000 lb gross on the Interstate systemfederal size and weight law
• State numbers height (13 ft 6 in to 14 ft 6 in) and off-network length are state law and are entered per routestate size and weight law
• Excess, not pass/fail fee schedules, escorts, and travel restrictions key off how far over the load is, in bandsstate permitting practice