WIM #31 US 2, MP 8.0 EAST GRAND FORKS, MN JANUARY 2015 MONTHLY REPORT

Transcription

1 WIM #31 US 2, MP 8.0 EAST GRAND FORKS, MN JANUARY 2015 MONTHLY REPORT

2 WIM #31 EAST GRAND FORKS MONTHLY REPORT - JANUARY 2015 WIM Site Location WIM #31 is located on US 2 at mile post 8.0, southeast of East Grand Forks, MN in Polk County. System Operation WIM #31 was operational for the entire month of JANUARY System Calibration WIM #31 was most recently calibrated on October 1, Table 1 summarizes the front axle weights of Class 9s by lane 1. Table 1 indicates that the Class 9 front axle weights were within ±9% of baseline calibration values for all lanes. Figures 1-4 show the distribution of gross vehicle weights (GVW) in the Class 9s at this site for the last 2 months in Lanes Summary of Volume Statistics Total Monthly Volume: 140,780 (100%) Monthly Average Daily Traffic (MADT): 4,541 Passenger Vehicles: 128,037 (90.9%) Monthly Heavy Commercial Average Heavy Commercial Vehicles: 12,743 (9.1%) Daily Traffic (MHCADT): 411 See also Table 2 for volume statistics by vehicle class and overweight status. Passenger Vehicles (PVs) and Heavy Commercial Vehicles (HCVs) Volume Trends. Eastbound (EB) vehicles typically reached highest volumes on Fridays, with lowest volumes generally reported on Sundays. Westbound (WB) vehicles reached highest volumes on Fridays, with lowest volumes typically observed on Saturdays. See Figure 5. Passenger Vehicles (PVs) Volume Trends. On an average 24-hour day (see Figure 6), EB PVs generally reached peak volume levels between 8:00 pm and 7:30 pm. Similarly, WB PVs peaked in volume between 9:00 pm and 6:30 pm. Heavy Commercial Vehicles (HCVs) Volume Trends. On an average 24-hour day, HCVs traveling EB typically reached peak volume levels between 7:30 am and 4:00 pm, while volume going WB peaked between 8:00 am and 5:30 pm. See Figure 6. Out of all HCVs, the two highest traffic volumes were generated by the Class 9s and Class 5s. Overweight HCVs Volume Trends. Of a total of 12,743 HCVs, 1,347 of them were overweight 3. These overweight HCVs contributed to 1.0% of total monthly volume, and 10.6% of total 1 Front axle weights of Class 9s are monitored on a monthly basis to assure performance between calibrations. The current goal of the WIM scale calibration is to have each individual axle weight stay within a range of ±9% of baseline calibration values. 2 Previous WIM research indicates that unloaded Class 9s typically weigh kips, while loaded Class 9s generally fall in the kip range. More recent data from several WIM sites suggests that the unloaded Class 9 range may have moved a little higher over time (due to increased presence of sleeper cabs, etc.), although these ranges are also thought to be site-specific. 3 An HCV is considered overweight during normal load limits in this report if they satisfy any of the following 1) exceed a gross vehicle weight (GVW) of 80,000 pounds, 2) exceed any of the legal weight maximums on any axle configurations (legal maximums are: single axle = 20,000 pounds; tandem axles spaced 8' or less = 34,000 pounds; tridem axles spaced 9' or less = 43,000 pounds; quad axles spaced 13' or less = 51,000 pounds). The Winter Load Increase (WLI) allows a 10% across the board increase in axle and gross vehicle weights without a permit on US,

3 monthly HCV volume. EB overweight vehicles typically reached highest numbers on Wednesdays during the week, with lowest numbers typically observed on the weekends. WB overweight vehicles tended to reach highest volumes on Mondays, with lowest numbers typically observed on the weekends. See Figure 5. The top two overweight violators by class were the Class 10s and 9s. Figure 7 shows that Class 9 overweight vehicles typically reached highest volumes from 8:30 am and 7:00 pm over a typical 24-hour day during this month. Overall, overweight vehicles tended to reach peak volume concentrations during typical business hours, with 27.2% of all overweight vehicles traveling WB this month (see Figure 8). Figure 9 shows the number of vehicles exceeding 88,000 pounds that crossed the WIM over the last 2 months. If the population of 88,000+ vehicles has remained the same since 2011, then it is anticipated that this site will have high numbers of 88,000+ vehicles (>1000 vehicles) from roughly late winter (March) through the fall (November). WIMs are currently used as a screening tool for weight enforcement, and it is estimated that the WIM scales can measure gross vehicle weights (GVW) within 90-95% of static weight scale measurements. Due to the possibility of measurement error, vehicles exceeding 10% of their legal weight limits (or 1.1 times their legal weight limits) are considered overweight 4 and should be weighed on static scales and reviewed for permits. During winter load limits, 29 EB vehicles exceeded 98,000 pounds (2 vehicles were Class 9s; 10 vehicles were Class 10s). Of vehicles traveling WB during normal load limits, 9 vehicles exceeded 98,000 pounds (none were C9s or C10s). Refer to Table 3 for the Top 10 highest, recorded GVWs from Classes 9 and 10 from JANUARY Loaded vs. Unloaded HCVs. Figure 10 shows the GVW distributions of Class 9s and 10s in JANUARY Data suggests that there were greater numbers of empty Class 9s than fully-loaded Class 9s traveling EB and WB. Data also suggests that there were more fully-loaded Class 10s than empty ones traveling EB. In contrast, there were more empty Class 10s than fully loaded ones traveling in the WB direction. Freight Totals. A total of 98,474 tons of freight was recorded to have crossed the WIM. More freight was shipped WB (60,741 tons) than EB (37,733 tons). See Table 4 and Figure 11 for more freight information. Infrastructure Considerations Bridge. Bridge No (a box culvert) is approximately 14.6 miles east of WIM #31, and Bridge No is 6.4 miles west of WIM #31. WIM #31 recorded a total of 140,780 vehicles with a combined GVW of 982,574 kips (1 kip = 1,000 pounds = 0.5 tons) in JANUARY See Table 5 and Figures for GVW information by vehicle class and lane. Pavement Design. A total of 7,114 equivalent single axle loads (ESALs) passed over the pavement at this site with approximately 91.6% of the ESALs in the driving lanes (53.4% EB and 46.6% WB). In particular, 67.6% of all ESALs were generated by the Class 9s (Class 9s were also responsible for generating 26.3% of total GVW observed this month). See Table 6 and Figures for more state routes, and county roads. An HCV is considered overweight during Winter Load Increase(WLI) in this report if they satisfy any of the following 1) exceed a gross vehicle weight (GVW) of 88,000 pounds, 2) exceed any of the legal weight maximums on any axle configurations (legal maximums are: single axle = 22,000 pounds; tandem axles spaced 8' or less = 37,400 pounds; tridem axles spaced 9' or less = 47,300 pounds; quad axles spaced 13' or less = 56,100 pounds). An overweight HCV is only included once in the overweight volume calculations regardless of how many of the aforementioned conditions are violated. For information on MN weight limit dates and statutes: 4 For example, Class 9s and 10s can legally have gross vehicle weights up to 80,000 lbs (with the exception of permitted loads) during normal load limits. To account for measurement error on the WIM scales, those exceeding 10% of the legal GVW maximum (or 1.1 times the legal GVW) should be screened (e.g., 80,000 lbs + 8,000 lbs = 88,000 lbs). Similarly during WLI vehicles weighing 96,800 lbs should be screened.

4 information on ESALs (Table 6 also provides flexible ESAL factors for each vehicle class using a terminal serviceability of 2.5 and a structural number of 5).

5 Table 7 contains a summary of key data from WIM #31 from JANUARY WIM monthly reports can be found at: MnDOT s vehicle classification scheme and vehicle class groupings for traffic forecasting can be found at: Attach: Figure 1 Monthly Class 9 GVW Histogram Lane 1 (EB Driving) Figure 2 Monthly Class 9 GVW Histogram Lane 2 (EB Passing) Figure 3 Monthly Class 9 GVW Histogram Lane 3 (WB Passing) Figure 4 Monthly Class 9 GVW Histogram Lane 4 (WB Driving) Figure 5 Average Volume and Average Overweight Volume vs. Day of the Week Figure 6 Passenger and Heavy Commercial Vehicles vs. Hour of the Day Figure 7 Overweight Vehicles by Class vs. Hour of the Day Figure 8 Overweight Vehicles by Direction vs. Hour of the Day Figure 9 Histogram of Vehicles Over 88,000 Pounds for Last 2 Months Figure 10 Class 9s and 10s by Direction vs. Gross Vehicle Weight Figure 11 Freight Tonnage and Percentage by Direction and Class Figure 12 Total Gross Vehicle Weight by Class and Lane Figure 13 Total Gross Vehicle Weight by Class Figure 14 Total ESALs by Class and Lane Figure 15 ESALs by Class Table 1 Front Axle Weight by Class and Lane Table 2 Vehicle Classification Data Table 3 Top 10 Gross Vehicle Weight, Class 9 and Class 10 Table 4 Freight Summary Table 5 Gross Vehicle Weight by Class and Lane Table 6 ESALs by Class and Lane and Flexible ESAL Factors Table 7 Site Summary To request this document in an alternative format, please call or , or your request to ADArequest.dot@state.mn.us. Please request at least one week in advance.

6 15.0% 14.0% 13.0% Figure 1 - Monthly Class 9 GVW Histogram - Lane 1 (EB Driving) Unloaded Peak Kips Nov-14 Dec-14 Jan % 11.0% 10.0% Percentage of Total Class 9's 9.0% 8.0% 7.0% 6.0% 5.0% 4.0% 3.0% 2.0% 1.0% 0.0% GVW (Kips)

7 15.0% 14.0% 13.0% 12.0% Figure 2 - Monthly Class 9 GVW Histogram - Lane 2 (EB Passing) Unloaded Peak Kips Oct-Nov 14 Dec 14-Jan % 10.0% Percentage of Total Class 9's 9.0% 8.0% 7.0% 6.0% 5.0% 4.0% 3.0% 2.0% 1.0% 0.0% GVW (Kips)

8 Figure 3 - Monthly Class 9 GVW Histogram - Lane 3 (WB Passing) 15.0% 14.0% 13.0% Unloaded Peak Kips Oct-Nov 14 Dec 14-Jan % 11.0% 10.0% Percentage of Total Class 9's 9.0% 8.0% 7.0% 6.0% 5.0% 4.0% 3.0% 2.0% 1.0% 0.0% GVW (Kips)

9 15.0% 14.0% 13.0% Figure 4 - Monthly Class 9 GVW Histogram - Lane 4 (WB Driving) Unloaded Peak Kips Nov-14 Dec-14 Jan % 11.0% 10.0% Percentage of Total Class 9's 9.0% 8.0% 7.0% 6.0% 5.0% 4.0% 3.0% 2.0% 1.0% 0.0% GVW (Kips)

10 Figure 5 - Average Volume and Average Overweight Volume vs. Day of the Week 3, , Average Number of Vehicles 2,000 1,500 1, Average Number of Overweight Vehicles EB Vehicles WB Vehicles EB Overweight Vehicles WB Overweight Vehicles Sunday Monday Tuesday Wednesday Thursday Friday Saturday Day of the Week

11 7,000 6,000 Figure 6 - Passenger and Heavy Commercial Vehicles vs. Hour of the Day NB Passenger Vehicles SB Passenger Vehicles NB Heavy Commercial Vehicles SB Heavy Commercial Vehicles , Number of Vehicles 4,000 3, , , Heavy Commercial Vehicles Hour of the Day

12 Figure 7 - Overweight Vehicles by Class vs. Hour of the Day C4 C5 C6 C7 C8 C Number of Overweight Vehicles C10 C11 C12 C13 Hour of the Day

13 Figure 8 - Overweight Vehicles by Direction vs. Hour of the Day Total Overweight Vehicles EB WB Number of Overweight Vehicles Hour of the Day

14 Figure 9 - Histogram of Vehicles Over 88,000 Pounds for Last 4 Months Jan-15 Dec-14 Nov-14 Oct-14 Number of Vehicles >100 Vehicle Weight (Kips) Vehicle Weights (Kips) Jan-15 Dec-14 Nov-14 Oct-14 Sep-14 Aug-14 Jul-14 Jun-14 May-14 Apr-14 Mar-14 Feb > TOTAL =

15 Figure 10 - Class 9's and 10's by Direction vs. Gross Vehicle Weight EB Class 9 WB Class 9 EB Class 10 WB Class Vehicles Weight (Kips)

16 Figure 11 - Freight Tonnage and Percentage by Direction and Class C11 0 0% C12 5,514 9% Eastbound Freight C13 3,884 6% C % C5 4,321 7% C6 1,636 3% C % C % C11 0 0% Westbound Freight C10 1,630 4% C12 2 0% C % C % C5 3,762 10% C6 2,461 7% C % C10 10,930 18% C % C9 32,699 54% C9 27,509 73%

17 Figure 12 - Total Gross Vehicle Weight by Class and Lane 140, ,000 EB Driving Lane EB Passing Lane WB Driving Lane WB Passing Lane 100,000 Total Gross Weight (Kips) 80,000 60,000 40,000 20,000 0 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 Vehicle Class

18 Figure 13 - Total Gross Vehicle Weight by Class C10 5.5% C11 0.0% C12 1.2% C13 0.1% C1 0.0% C2 29.7% C9 26.3% C8 1.3% C7 0.1% C6 1.9% C5 4.4% C4 0.4% C3 28.9%

19 Figure 14 - Total ESALs by Class and Lane 2,500 EB Driving Lane EB Passing Lane WB Driving Lane WB Passing Lane 2,000 1,500 ESALs 1, C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 Vehicle Class

20 C11 0.0% Figure 15 - ESALs by Class C12 3.6% C13 0.5% C1 0.0% C2 0.7% C3 1.5% C4 1.2% C5 5.6% C % C6 5.1% C7 0.3% C8 2.2% C9 67.6%

21 TABLE 1 - FRONT AXLE WEIGHT BY CLASS AND LANE WIM #31 - EAST GRAND FORKS January 2015 VEHICLE LANE 1 FRONT AXLE LANE 2 FRONT AXLE LANE 3 FRONT AXLE LANE 4 FRONT AXLE MONTH CLASS (Kips) ± 9% (Kips) ± 9% (Kips) ± 9% (Kips) ± 9% Oct 14 C Nov % % % % Dec % % % % Jan % % % %

22 TABLE 2 - VEHICLE CLASSIFICATION DATA WIM #31 - EAST GRAND FORKS January 2015 MONTHLY MONTHLY MONTHLY MONTHLY AVERAGE MONTHLY TOTAL TOTAL TOTAL VEHICLE DAILY TOTAL VOLUME OVERWEIGHT OVERWEIGHT CLASS VOLUME VOLUME PERCENTAGE VEHICLES PERCENTAGE C % 0 0.0% C2 2,532 78, % 0 0.0% C3 1,599 49, % 0 0.0% C % 2 0.1% C , % % C % % C % % C % 6 0.4% C , % % C , % % C % 0 0.0% C % % C % % TOTAL = 4, , % 1, % TABLE 3 - TOP 10 GROSS VEHICLE WEIGHT, CLASS 9 AND CLASS 10 WIM #31 - EAST GRAND FORKS January 2015 DAY OF VEHICLE GVW DATE WEEK TIME CLASS DIRECTION LANE (lbs) 1/25/2015 Sunday 20:29:27 10 Eastbound 1 107,990 1/31/2015 Saturday 18:43:13 10 Eastbound 1 103,960 1/21/2015 Wednesday 11:43:30 10 Eastbound 1 103,450 1/27/2015 Tuesday 16:04:26 10 Eastbound 1 101,080 1/19/2015 Monday 16:03:29 10 Eastbound 1 100,390 1/28/2015 Wednesday 10:36:38 9 Eastbound 1 100,230 1/18/2015 Sunday 13:40:31 10 Eastbound 1 99,400 1/11/2015 Sunday 13:37:07 10 Eastbound 1 98,620 1/24/2015 Saturday 12:45:30 10 Eastbound 1 98,550 1/9/2015 Friday 11:21:23 10 Eastbound 1 98,410

23 TABLE 4 - FREIGHT SUMMARY WIM #31 - EAST GRAND FORKS January 2015 EASTBOUND WEIGHT OF TOTAL NUMBER PERCENTAGE TOTAL WEIGHT WEIGHT TOTAL EMPTY NUMBER OF OF OF VEHICLES OF EMPTY WEIGHT OF VEHICLE VEHICLE OF EMPTY EMPTY WITH FREIGHT VEHICLES FREIGHT CLASS (Kips) VEHICLES VEHICLES VEHICLES (%) (Kips) (Kips) (Tons) C , C , ,707 2,117 4,321 C , ,636 C C ,122 2, C ,731 1, ,611 36,792 32,699 C ,404 1,187 10,930 C C , ,514 C , ,884 TOTAL = 7,011 1, % 252, ,741 WESTBOUND WEIGHT OF TOTAL NUMBER PERCENTAGE TOTAL WEIGHT WEIGHT TOTAL EMPTY NUMBER OF OF OF VEHICLES OF EMPTY WEIGHT OF VEHICLE VEHICLE OF EMPTY EMPTY WITH FREIGHT VEHICLES FREIGHT CLASS (Kips) VEHICLES VEHICLES VEHICLES (%) (Kips) (Kips) (Tons) C , C , ,061 2,014 3,762 C ,160 1,520 2,461 C , C ,264 3, C , ,216 25,994 27,509 C ,328 8,668 1,630 C C C , TOTAL = 5,754 1, % 170, ,733 GRAND TOTAL = 12,765 3, % 423, ,474

24 TABLE 5 - GROSS VEHICLE WEIGHT BY CLASS AND LANE WIM #31 - EAST GRAND FORKS January 2015 EB EB WB WB DRIVING PASSING PASSING DRIVING VEHICLE LANE LANE LANE LANE TOTAL CLASS (Kips) (Kips) (Kips) (Kips) (Kips) PERCENTAGE C % C2 118,751 24,901 31, , , % C3 118,938 22,713 24, , , % C4 1, ,907 4, % C5 19,842 2,756 2,712 18,099 43, % C6 5, ,139 11,705 18, % C , % C8 4, ,732 12, % C9 108,919 9,898 8, , , % C10 31,265 3,083 1,224 18,611 54, % C % C12 10,284 1, , % C , % TOTAL = 421,194 65,988 71, , , % GVW/LANE = 42.9% 6.7% 7.2% 43.2% GVW/DIRECTION = 49.6% 50.4% GVW/DIRECTION = 487, ,392 TABLE 6 - ESALs BY CLASS AND LANE AND FLEXIBLE ESAL FACTORS WIM #31 - EAST GRAND FORKS January 2015 EB EB WB WB FLEXIBLE VEHICLE DRIVING PASSING PASSING DRIVING ESAL CLASS LANE LANE LANE LANE TOTAL PERCENTAGE FACTOR C % C % C % C % 0.60 C % 0.11 C % 0.57 C % 0.91 C % 0.33 C9 2, ,340 4, % 0.96 C % 0.89 C % -- C % 1.86 C % 3.89 TOTAL = 3, ,073 7, % ESALS/LANE = 48.4% 5.0% 3.4% 43.2% ESALS/DIRECTION = 53.4% 46.6% ESALS/DIRECTION = 3,797 3,317

25 TABLE 7 - SITE SUMMARY WIM #31 - EAST GRAND FORKS January 2015 V O L U M E & V E H I C L E C L A S S HEAVY HEAVY HEAVY HEAVY COMMERCIAL COMMERCIAL PASSENGER PASSENGER COMMERCIAL COMMERCIAL VEHICLES IN VEHICLES IN TOTAL MONTHLY MONTHLY VEHICLES VEHICLES VEHICLES VEHICLES DRIVING LANE PASSING LANE MONTH VOLUME ADT HCADT # % # % % % Oct ,538 5, , % 26, % 87.0% 13.0% Nov ,236 4, , % 14, % 91.6% 8.4% Dec ,125 4, , % 13, % 91.7% 8.3% Jan ,780 4, , % 12, % 91.9% 8.1% TOTAL = 622, , , AVERAGE = 155,670 5, , % 16, % 90.6% 9.4% E S A L S ESALS ESALS ESALS ESALS DRIVING PASSING PAVEMENT EB EB WB WB LANE LANE LIFE DRIVING PASSING PASSING DRIVING TOTAL ESALS ESALS DECREASE MONTH LANE LANE LANE LANE ESALS % % MONTHS Oct 14 6, ,446 11,256 19, % 10.3% 26.2 Nov 14 4, ,753 8, % 8.4% 7.1 Dec 14 3, ,234 7, % 7.8% 7.1 Jan 15 3, ,073 7, % 8.4% 3.6 TOTAL = 18,357 1,721 2,292 21,316 43, AVERAGE = 4, ,329 10, % 8.7% 11.0

26 TABLE 7 - SITE SUMMARY (contd.) WIM #31 - EAST GRAND FORKS January 2015 G R O S S V E H I C L E W E I G H T OVERWEIGHT/ GVW GVW GVW GVW TOTAL OVERWEIGHT/ HEAVY NUMBER NUMBER EB EB WB WB TOTAL O NUMBER OF TOTAL COMMERCIAL OVER OVER DRIVING PASSING PASSING DRIVING GVW V V OVERWEIGHT VOLUME VOLUME 88,000 98,000 MONTH LANE LANE LANE LANE KIPS E E MONTH VEHICLES % % LBS LBS Oct , , , ,602 1,860,315 R H Oct 14 6, % 25.9% Nov ,928 74,539 83, ,279 1,147,254 W I Nov 14 1, % 12.9% Dec ,299 74,525 76, ,412 1,067,710 E C Dec 14 1, % 8.5% Jan ,194 65,988 71, , ,574 I L Jan 15 1, % 10.6% G E TOTAL = 2,177, , ,550 2,144,533 5,057,854 H S TOTAL = 11, , AVERAGE = 544,438 86,754 97, ,133 1,264,464 T AVERAGE = 2, % 14.4% F R E I G H T EB WB TOTAL EB WB FREIGHT FREIGHT FREIGHT FREIGHT FREIGHT MONTH TONS TONS TONS % % Oct 14 84, , , % 67.3% Nov 14 60,447 61, , % 50.3% Dec 14 61,655 40, , % 39.4% Jan 15 60,741 37,733 98, % 38.3% TOTAL = 267, , , AVERAGE = 66,827 78, , % 48.8%