B08_Attachment_-_YELL_-__HAULING_LIMITATIONS___SPECS.pdf

Yell302 rev. 2/16

SIZE, WEIGHT & HAULING LIMITATIONS OF TRAFFIC ON YELLOWSTONE NATIONAL PARK ROADS

Section A: AN OVERSIZE LOAD IS ONE THAT IS WIDER THAN 8’6” OR LONGER THAN 75’

STATUTORY SIZE AND WEIGHT LIMITS ESCORT REQUIREMENTS SIGN REQUIREMENTS

Width:

8’7” to 10’ 1

10’1” to 11’ 1,2

11’1” to 18” 1, 2

None required.

Front required. Rear required also if load extends over center line, road closures may be required 1,2

Front and rear required, road closures may be required 1,2

All Oversize Loads Front and rear signs which read “OVERSIZE LOAD”; yellow, at least 60” wide by 10” high, with black lettering 8” high by 1” wide. Signs must be clean, fully visible, and shall not cover lights on vehicle.

Escort Vehicles Signs that read “OVERSIZE LOAD” visible to approaching traffic; yellow, at least 60” wide by 10” high, with black lettering 8” high by 1” wide. Signs must be clean, fully visible, and shall not cover lights on vehicle.

Height: 13’6” and Over

(OF Overpass 16’ Northbound, 17’ Southbound)

It is the responsibility of permittee to ensure that load can safely traverse planned route. If it is necessary to lift overhead wires, cost will be borne by permittee.

Length: Total longitudinal dimension of any vehicle or combination of vehicles, including power unit or any load holding device.

75’- Combined length in a truck-tractor, semi-trailer, trailer combination: 48’ maximum for semi-trailer and 40’ maximum for trailer. The longest trailer, not including connecting mechanisms shall be the first unit behind the truck tractor.

75’ to 99’11” 1,2

100’ and over 1,2

No combination of vehicles shall consist of more than three single vehicles.

None required.

Front required, road closure/s may be required. 1 2

Front and rear required; road closure/s may be required. 3

Weight:3 single axle 20,000lbs two-axle tandem 34,000lbs three-axle tandem 42,000lbs

Man-Scissor Lift Vehicles – may not be driven on park roads – must be trailered to job site.

No escorts are required based on vehicle weight 3

1 ALL OVERSIZE vehicle travel between Friday before Memorial Day and September 15th is restricted to night travel between 9 P.M. & 9 A.M. See reverse.

2Contact the Visitor Services Office for approval (307) 344-2115 or 344-2106. If transport of oversize loads necessitates a road closure, the cost will be borne by the permittee.

3 Weight limit restrictions apply to some park bridges, check with the Visitor Services Office at (307) 344-2115 or 344-2106.

Gross vehicle weight* may exceed 80,000 lbs. only if it is in accordance with Montana and Wyoming State requirements pertain to number of axles and bridge length (distance between the extremes of any group of two or more consecutive axles) and weight does not exceed Federal Highway Load Factor Limits for specific park bridges. Cranes over 100 ton capacity frequently exceed the bridge load criteria. A sketch showing the crane size and axel loading must be submitted in writing for approval at least two weeks BEFORE the equipment is transported to the park.

*Gross weight is defined as the total weight of a vehicle and vehicle combinations including the weight of any load carried in or on a vehicle or vehicle combination.

OVERSIZE RESTRICTIONS

1. Permits are required for vehicles and loads that exceed the above statutory limits.

2. Due to peak visitation from Friday before Memorial Day through September 15th, travel for any vehicles exceeding the statutory limits is restricted to night- 9:00 p.m. to 9:00 a.m. If an oversize load requires temporary road closures, the National Park Service will determine the time that travel is permitted.

3. All oversize loads or cargoes or portions thereof will be adequately lashed or secured to the bed of the vehicle.

4. Oversize movements must display yellow warning signs that read “OVERSIZE LOAD” visible from the front and rear. The signs must be at least 60 inches wide by 10 inches high, and the lettering must be black, 8 inches high, with 1-inch lettering. The signs shall be kept in a clean condition, fully visible, and shall not cover lights on the vehicle.

5. Escort vehicles must display yellow warning signs, visible to approaching traffic that reads “OVERSIZE LOAD”. The signs must be at least 60 inches wide by 10 inches high, and the lettering must be black, 8 inches high, with 1-inch lettering. The signs shall be kept in a clean condition, fully visible, and shall not cover lights on the vehicle.

6. All headlights, tail lights, and running lights of all escort and oversize movements will be on at all times while vehicle is on roadway.

7. Projections extending more than 12 inches beyond the body of the vehicle or load must be marked with a clean, bright red flag at least 12 inches square.

8. Maximum speed of any oversize vehicle or vehicles shall be 35 mph.

9. Oversize and escort vehicles will use roadside turnouts and parking areas whenever possible to permit passage of vehicles and to maintain a free flow of traffic.

10. Any equipment breakdowns or stoppages involving partial or complete blocking of roadway will necessitate flaggers and adequate markers on each side of the convoy unit to allow safe passage of other traffic.

The above special requirements shall not apply to snow removal equipment or to the transportation of petroleum or asphalt products required to repair or maintain roads within Yellowstone National Park. These vehicles will adhere to traffic control regulations specified in NPS-50.

Section B: Guidelines for transporting/hauling loose aggregate material.

1. Between July 5 and Sept 9 trucks hauling fill/gravel type material may enter the park between 5AM and 9AM (trucks may enter until 9AM), and again between 2PM and 10PM (to avoid later evening noise, trucks must be out of the park by 10PM).

2. Hauling before July 5 or after Sept 9 will be allowed, depending on road conditions, from 5AM to 10PM (all trucks must be out of the park by 10PM).