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3-S3 singles 89,640 (cattle) 88,140 (cattle) 90,740 (cattle) 88,800 (cattle) 89,860 (cattle) 88,580 (cattle) 91,020 (cattle) 88,140 (grain)

8-axle B-dpubles 122,060 (Cdn wts) 109,340 105,600 (hb-grain) 104,400 (hb-grain) 105,400 (hb-grain) 111,100 (hb-grain) 122,980 (hb-fertilizer-Cdn wts) 107,440 (hb-grain) 131,240 (hb-grain-Cdn wts) 102,880 (hb-grain) 105,460 (hb-grain) 119,840 (hb-grain-Cdn wts) 106,452 (Montana wts)

88,365 (average wt.)

124,030 (Cdn wts)

105,345 (weigh-out)

7/8-axle A-doubles 102,940 (dry bulk) 106,620 (hb-grain) 105,420 103,000 (hb-grain) 105,440 (hb-grain) 107,320 (hb-grain) 106,420 105,600

67,840 90,800

B-6

& GVWs (in pounds) of loaded southbound 3-S3single trailers, 8-axle B-doubles,

and A-doubles:

Perishable food

2347

38

123

32

117

5

1

0

General freight

553

9

42

11

37

4

0

1

Bulk dry chemicals

581

9

21

5

8

9

4

0

Equipment

502

8

32

8

31

0

1

0

Grains

331

5

15

4

6

4

5

0

Construction materials

324

5

19

5

19

0

0

0

Bulk liquid chemicals

240

4

12

3

11

0

1

0

Metal products

193

3

10

3

10

0

0

0

& 1 of 8 trucks is a cattle hauler; 1 of 8 trucks is a grain hauler

  • -

    Northbound Traffic:

    • -

      CY 1992 = 174 trucks/day ^ CY 1994 = 219 trucks/day [75 U.S./144 Canadian]

      • *

        Alberta’s 3-day survey of 389 northbound trucks had the following results:

Commodity

Tonnes

%

3

8

2

6

0

1025

16

54

14

nil

0

52

13

40

6232

100

389

100

334

Trucks

%

Configurations Single A-double B-double C-double

Petroleum products Other Empty

Above total

179

6

6

32

22

1

0

2

0

  • *

    Of the 389 northbound trucks:

    • *

      28 had Montana overdimension permits, 46 had Montana weight permits, and 13 had Canadian weight permits to travel to Shelby.

      • *

        36% carried perishable food (fruits, vegetables and meats)--mostly originating in California and southern U.S.--average payload of 19 tonnes.

      • *

        70% destined for Calgary, Edmonton, and Lethbridge.

      • *

        Montana and California accounted for 47% of traffic destined for Alberta.

      • *

        85% of the northbound trucks were single trailer units.

    • +

      1992 northbound weight at Coutts = 760,000 short tons/year (689,000 metric tonnes/year); Truck count =

27,560 25-ton trucks/year or 75 25-ton trucks/day [p A30]. This compares well with 1994 Alberta study of 83-25-ton trucks/day. & Of 43 northbound trucks, 65% were 3-S2's; 12% 3-S3's; 9% 8-axle B-trains; 14% 7-axle A-trains.

  • #

    1991 300 trucks/day through the Sweetgrass-Coutts [p 24].

    • -

      Pursuant to Section 1023 in ISTEA, and an associated Memorandum of Understanding between Alberta and

Montana, trucks are permitted to run on I-15 between the border and Shelby at axle weights of Canadian RTAC axle weights (12,100 lb steering, 37,500 lb tandem, 50,700 lb tridem) and gross vehicle weights, and are excluded from compliance with Bridge Formula B.

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