St. Charles County Transportation Plan 2030 - East-West Gateway ...

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Crash Rates The crash rate is the best measure of safety on a given road segment and is calculated as follows. R = (A x 100 x 1,000,000) (365 days x T x V x L) where: R = crash rate in crashes per 100 million vehicle-miles (100MVM). A = number of crashes reported during the analysis period. T = time of the analysis period in years. V = annual average daily traffic on the road segment. L = length of the road segment in miles. Table 18 lists the roads by functional class with their crash rate. It relates the number of crashes to the length of the road and traffic volume. Table 19 ranks them by their crash rates. The road with the highest was Rt. 94 from Rt. 370 through the city of St. Charles to I-70. It travels through the urban core of the city and has many signals, driveways, and curb parking that create conflict points. Other road segments at the top of the list include a few that have short lengths with relatively low traffic volumes. However, they have many crashes because of numerous intersections and entrances. The road segments with the lowest crash rates, those that are the safest, are I-70 and I-64 and all the other freeways and expressways. Although they carry high volumes and have the most crashes per mile, they are the safest for the amount of vehicles they handle due to their high design standards. Severity Crash Rates In order to further assess the safety of travel on the road segments, a severity crash rate was developed. The crash rate formula described above was used but instead of using total crashes, the number of fatal and disabling injury crashes were used. This allowed for examining the severity of crashes on a road while taking into account its length and traffic volume. Table 20 shows the listing of the roads and their ranking. It was determined that the roads with the highest severity crash rates were those on two lane roads mainly in rural parts of St. Charles County. First was Rt. 94 from Rt. D to Rt. DD, a two-lane road with severe horizontal and vertical curves, and second was Rt. DD from U.S. 40/61 to Rt. D, which also has severe curvatures. Roads with low severity crash rates, those that were safest, were the high design facilities such as the interstates, freeways, and expressways. 66
Table 18 Missouri Department of Transportation Highway Crash Data 2002, 2003, and 2004 Crash Rates Segment Crashes 3 Yr 2004 Crash Road From To Miles 2002 2003 2004 Total ADTs Rate I-64 St. L. Co. Rt. K 3.2 202 165 72 439 77500 161 I-70 St. L. Co. Rt. 94 1.8 266 292 240 798 165100 244 I-70 Rt. 94 Zumbehl 1.4 124 131 125 380 155000 162 I-70 Zumbehl Cave Spgs 1.8 143 179 164 486 141700 175 I-70 Cave Spgs Rt. 370 1.8 106 109 126 341 124400 141 I-70 Rt. 370 Mid R M 1.2 176 126 147 449 134300 248 I-70 Mid R M Rt. 79 1.7 186 152 180 518 138500 199 I-70 Rt. 79 Rt. K/M 2.6 203 204 216 623 115600 187 I-70 Rt. K/M Bryan Rd. 1.8 139 128 132 399 89800 228 I-70 Bryan Rd. Lake St. L 2.0 101 112 103 316 75900 187 I-70 Lake St. L U.S. 40/61 3.6 86 135 108 329 66400 126 I-70 U.S. 40/61 Pearce Blvd. 2.1 187 171 148 506 72200 302 I-70 Pearce Blvd. Warren Co. 4.9 135 91 149 375 56400 124 Rt. 364 St. L. Co. Rt. 94 E. 1.6 0 2 24 26 50000 29 Rt. 364 Rt. 94 E. Rt. 94 W. 1.6 55 53 78 186 50000 210 Rt. 370 St. L. Co. Rt. 94 0.6 23 17 22 62 56800 166 Rt. 370 Rt. 94 Elm St. 2.8 39 62 47 148 59300 82 Rt. 370 Elm St. I-70 5.1 71 85 82 238 51900 82 U.S. 40/61 Rt. N I-70 4.8 114 149 182 445 35700 237 U.S. 40/61 Rt. K Rt. N 5.2 129 180 142 451 46100 173 U.S. 61 I-70 Lincoln Co. 7.3 110 75 102 287 33000 109 U.S. 67 St. L. Co. Alton, IL 4.1 62 44 53 159 25800 136 Rt. 79 Rt. M Lincoln Co. 6.4 38 53 44 135 13300 145 Rt. 79 I-70 Rt. M 4.0 47 61 60 168 19000 201 Rt. 94 U.S. 67 Rt. 370 22.3 89 78 80 247 2700 375 Rt. 94 Rt. 370 I-70 3.6 356 337 379 1072 16000 1724 Rt. 94 I-70 Rt. 364 E. 3.1 320 287 312 919 56900 480 Rt. 94 Rt. 364 W. Mid R. M. Dr. 3.6 240 231 300 771 42700 461 Rt. 94 Mid R. M. Dr. I-64 3.8 201 229 178 608 40000 370 Rt. 94 I-64 Rt. D 1.2 55 33 28 116 10700 825 Rt. 94 Rt. D Rt. DD 6.0 35 33 30 98 3000 501 Rt. 94 Rt. DD Warren Co. 14.3 39 41 65 145 2900 320 Rt. A I-70 U.S. 61 3.3 58 65 47 170 12000 397 Rt. B Rt. 94 Huster 4.1 8 3 3 14 1500 206 Rt. B Huster Rt. C 5.1 4 3 2 9 800 202 Rt. D Rt. 94 Rt. DD 5.9 26 33 30 89 7400 188 Rt. K I-70 Rt. N 3.2 476 432 385 1293 51000 733 Rt. K Rt. N I-64 3.2 126 143 144 413 17600 666 Rt. N U.S. 40/61 Rt. Z 5.4 41 62 50 153 11500 225 Rt. N Mid R. M. Dr. Rt. K 4.0 161 181 159 501 22600 501 Rt. N Rt. K U.S. 40/61 3.9 168 176 169 513 21400 560 Rt. P Rt. M U.S. 61 10.2 55 49 57 161 7500 191 Rt. Z I-70 Rt. N 2.5 43 45 37 125 7000 647 Rt. DD U.S. 40/61 Rt. D 6.0 47 28 76 151 3000 770 Totals and Averages = 188.0 5290 5265 5277 15832 327 67
Page 1 and 2:
THE ST. CHARLES COUNTY TRANSPORTATI
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Table of Contents (Continued) Chapt
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Table of Contents (Continued) Chapt
Page 8 and 9:
List of Figures Figure Page 1. Coun
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List of Acronyms/Terms AASHTO Ameri
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investment scenarios. Also, more ac
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doubled, going from 46,354 to 101,7
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C. Present Land Use Basic inputs in
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Mueller Rd., Elm Point Rd., and Lit
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land is available for additional de
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Interstate highways serve traffic w
Page 27 and 28: other uses as well. They generally
Page 29 and 30: Table 4 Average Daily Traffic Volum
Page 31: U.S. 67 is a four-lane expressway t
Page 35: Figure 4 Year 2004 Average Daily Tr
Page 39 and 40: Rt. N has two major parts which are
Page 41 and 42: Table 6 Missouri River Crossings Ch
Page 43 and 44: Table 7 Average Daily Traffic Volum
Page 45 and 46: adds to the amount of VMT that is f
Page 47 and 48: Criteria Table 10 Level of Service
Page 49 and 50: I-64 From the Missouri River to wes
Page 51 and 52: I-70 west of U.S. 40/61 to Pearce B
Page 53 and 54: Criteria Table 11 Level of Service
Page 55 and 56: speed of 50 placing it at LOS C. Th
Page 57 and 58: Jungermann Rd. This road runs from
Page 59 and 60: B-5.5. Major Collectors Major Colle
Page 61 and 62: U.S. 67 experienced no delays and t
Page 63 and 64: Road Beginning End Table 14 Travel
Page 65 and 66: southbound from I-70 to Rt. 94 was
Page 67 and 68: • The consultant sent out questio
Page 69 and 70: F. Aviation St. Charles County has
Page 71: B-1.1 MoDOT Roads Number of Crashes
Page 74 and 75: Table 16 Missouri Department of Tra
Page 78 and 79: Table 19 Missouri Department of Tra
Page 80 and 81: B-1.2. Comparison of MoDOT Roads to
Page 82 and 83: Road Table 22 St. Charles County Ma
Page 84 and 85: Table 24 St. Charles County Major R
Page 86 and 87: B-1.4 MoDOT and County Crash Rate C
Page 88 and 89: No. Road Segment Crashes From To Mi
Page 90 and 91: The Council’s long range plan dis
Page 92 and 93: A. Background V. Present Transporta
Page 94 and 95: St. Louis. The next or “Second Ti
Page 96 and 97: County Preservation Table 28 Transp
Page 98 and 99: D-1. Mode of Travel to Work For 200
Page 100 and 101: to I-64, and Winghaven Blvd./Bryan
Page 102 and 103: When a new interchange is built eas
Page 104 and 105: taking into account future improvem
Page 107: Figure 8 Year 2030 Forcasted Travel
Page 110 and 111: 100
Page 112 and 113: I-64 Summary Traffic volumes on I-6
Page 114 and 115: With an additional lane eastbound (
Page 116 and 117: By 2030 volumes are expected to rea
Page 118 and 119: passes through the signal of the no
Page 120 and 121: Rt. A This five-lane road runs from
Page 122 and 123: of future travel conditions. Some m
Page 124 and 125: Winghaven Blvd. Rt. N to I-64. Wing
Page 126 and 127:
severity, and the crash rate (crash
Page 128 and 129:
118
Page 130 and 131:
B-1. MoDOT Roads The following part
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122
Page 134 and 135:
study should be low, however, impro
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public decisions, and does not mean
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APPENDICES
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APPENDIX B 2030 TRAFFIC VOLUME FORE
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Appendix B (Continued) Route/ Exist
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