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

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By 2030 volumes are expected to reach 80,000 across the Missouri River. Peak hour volumes, as a percent of daily traffic, will be higher than those on I-70 and I-64 and are estimated at 12 percent. The high direction of travel will also be more at 65 percent. This will cause peak hour volumes in the high direction of travel to be about 6,200. With five lanes in both directions across the river, peak hour volumes for each lane will be about 1,250 vehicles. Even with converting to pcphpl, this provides LOS C and no congestion. From the bridge to Rt. 94 volumes will drop slightly to 75,000 and it will lose a lane in each direction. Using 12 percent for peak hour volumes and 65 percent for the high direction gives 5,900 or about 1,500 vehicles per lane. Converting to pcphpl gives 1,600. From Table 10 and 60 mph speed limit, this equates to a low LOS D with some congestion. From its north junction with Rt. 94 through Harvester Rd. to Mid Rivers Mall Dr. Rt. 364 will take the place of Rt. 94. It will carry between 70,000 and 60,000 vehicles a day. Peak hour volumes will be less of the daily totals in the old Rt. 94 corridor or about 10 percent. The directional split in traffic will be more equal at about 55/45 percent. With four lanes in each direction this equates to a high of about 1,000 vehicles per lane or LOS C with no congestion. When Rt. 364 is completed from Mid Rivers Mall Dr. west to the I-64/Rt. N interchange, volumes will increase due to growth in the corridor and its connection to I-64. Since this part of the improvement is not included in Legacy 2030, forecasts with this addition have not been made. It is expected that the increase will not cause the road to reach its capacity, therefore, it will function without any serious congestion problems. However, its completion will greatly aid traffic congestion on both I-64 and on I-70. Rt. 370 Traffic across the Missouri River has grown steadily. Year 2004 volumes indicate 61,000 at the river dropping to 58,000 near the Elm Ave. interchange. West of Truman Rd. it was 51,000. By 2030 it is expected that volumes will reach 85,000 at the Missouri River, 65,000 west of Elm Ave. and 60,000 west of Truman Rd. At the Missouri River during the peak hours in 2030 it will have 10 percent of the daily traffic and a 60/40 directional split. For a six-lane road, the peak direction will have 5,100 vehicles or 1,700 vehicles per lane. Converting to pcphpl gives 1,800. Table 10 and a 60-mph speed limit indicates LOS D with moderate congestion. From Rt. 94 through the Elm Ave. and west to I-70 it remains a six-lane freeway and volumes drop resulting in a better LOS C with no congestion. One item of note is the fact that some traffic from I-70 finds Rt. 370 a useful bypass eliminating the need for travel on highly congestion I-70. This is especially true for vehicles traveling to and from the north part of St. Louis County or through the region and wanting to avoid traveling through downtown St. Louis. It also is greatly used if there is an incident on I-70 that causes any disturbance in traffic flow. At these times volumes can be much higher and the congestion can be quite acute. C-2.2. Expressways As noted previously, traffic flow on an expressway differs considerably from that of a freeway since it has at-grade intersections and many of them may be signalized depending on the road’s location. The HCM recognizes this difference and the analysis of the following expressways follows that of the HCM. Table 11 in Chapter III provides the LOS values for these expressways. 106
U.S. 61 Volumes on this four-lane road have been increasing steadily with the growth in Lincoln County. This will continue well into the future and by 2030 volumes are expected to reach 50,000 per day at the county line. During the peak hours it will carry 10 percent of these volumes and a 60/40 directional split. This equates to 3,000 vehicles on the two lanes in the high direction of travel or 1,500 per lane. Factoring for pcphpl gives 1,600 vehicles. Using Table 11 from Chapter III and a 60 mph speed limit, this equates to LOS D. The road will operate with minor congestion during the peak hours. Close to I-70 daily volumes will rise to about 60,000 on the four lanes and congestion will increase with LOS approaching E. The ramps to and from I-70 will also add to this congestion. U.S. 67 Volumes on this road have remained level over the last few years and are not expected to increase substantially in the future. The 2030 forecast indicates volumes will reach 34.000. The peak hours will be about 12 percent of the daily volume and have a 65/35 directional split. This equals 2,700 vehicles on the two lanes or 1,350 per lane. Factoring for pcphpl gives 1,450 and from Table 11 indicates the road will operate with no congestion at LOS C. C-2.3. Principal Arterials This classification includes a large number of the major roads in the county including both MoDOT and county roads. As explained in Chapter III, the present LOS on these roads was determined by reviewing their peak hour traffic volumes, operating conditions, including their physical characteristics, average speeds, number of signalized intersections and their LOS. These data were used as reference for making estimates of future LOS based on forecasted traffic volumes, committed roadway improvements, estimates of future speeds, and other relevant data. Each of these roads is discussed below. Rt. 79 The section of Rt. 79 from Lincoln County south to Rt. M is classified as a Minor Arterial road. However, it is discussed here for continuity. From Rt. M to I-70 it is a Principal Arterial road. Traffic on this route has continued to rise as population in the northern part of St. Charles County and in adjoining Lincoln County has grown. This trend will continue in the future according to population and employment projections. By the year 2030 the road is expected to carry about 18,000 vehicles just south of Lincoln County, up from 13,000 in 2004. Average peak hour travel speeds will drop from the mid 40's to below 30 mph. Present day peak hour traffic is operating at LOS C to D at the two signalized intersections. It is expected that more intersections will be signalized and these side roads will carry higher volumes. This will lower their LOS to E. Congestion will be serious during the peak hours for both directions of traffic on the two lane section. On the four lane section north of I-70 volumes are expected to rise to 27,000, a substantial increase over the 20,000 experienced today. Long backups and delays can be expected during all the peak hours for northbound traffic where it necks down to two lanes. The back ups will be much more serious than what is experienced today and the LOS will drop to F or over the capacity of the road. Congestion will also increase for southbound traffic especially in the morning peak hour as traffic 107
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THE ST. CHARLES COUNTY TRANSPORTATI
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Table of Contents (Continued) Chapt
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Table of Contents (Continued) Chapt
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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
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other uses as well. They generally
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Table 4 Average Daily Traffic Volum
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U.S. 67 is a four-lane expressway t
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Figure 4 Year 2004 Average Daily Tr
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Rt. N has two major parts which are
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Table 6 Missouri River Crossings Ch
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Table 7 Average Daily Traffic Volum
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adds to the amount of VMT that is f
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Criteria Table 10 Level of Service
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I-64 From the Missouri River to wes
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I-70 west of U.S. 40/61 to Pearce B
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Criteria Table 11 Level of Service
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speed of 50 placing it at LOS C. Th
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Jungermann Rd. This road runs from
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B-5.5. Major Collectors Major Colle
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U.S. 67 experienced no delays and t
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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 76 and 77: Crash Rates The crash rate is the b
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 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
Page 132 and 133: 122
Page 134 and 135: study should be low, however, impro
Page 136 and 137: public decisions, and does not mean
Page 139: APPENDICES
Page 143 and 144: APPENDIX B 2030 TRAFFIC VOLUME FORE
Page 145: Appendix B (Continued) Route/ Exist
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