Laserfiche WebLink
<br />Pros and Cons for McCaslin Interchange Northeast Loop On-ramp <br /> <br />Pros <br />. A loop on-ramp would improve the operations of the existing traffic signal at the <br />McCaslin Blvd / westbound US-36 off-ramp by eliminating the northbound <br />McCaslin Blvd to westbound US-36 movement from the traffic signal. <br /> <br />. A loop on-ramp would reduce the delay experienced by motorists accessing US- <br />36 from northbound McCaslin Blvd by eliminating the turning movement from the <br />existing traffic signal. The projected AM Peak hour 2035 LOS for the movement <br />of traffic to the westbound on-ramp would be LOS D (45.6 seconds of delay) for <br />the loop configuration, compared with LOS E (70.4 seconds of delay) for the <br />double left turn configuration. The projected overall AM Peak hour 2035 LOS for <br />the entire intersection is LOS B (12.0 seconds delay) for the loop configuration <br />compared with LOS C (23.3 second of delay) for the left turn configuration. The <br />projected PM Peak hour 2035 LOS for both alternatives and for the intersection <br />as a whole is only 5 seconds different. Refer to Table 1 below for summary <br />information. <br /> <br />. A loop on-ramp would not require the reconstruction of the existing bridge to <br />provide an additional left-turn lane. <br /> <br />. The current TIP already has $5.6 Million programmed for the loop on-ramp. <br /> <br />Table 1. 2035 Preferred Alternative Peak Hour LOS and Delay at the McCaslin <br />Interchange Westbound Ramps Intersection <br /> <br /> Movement Left Turn Northeast Loop <br /> Configuration Configuration <br />AM Peak Hour <br /> Northbound Left E (71.2) - <br /> Northbound Through A ( 9.4) B (15.4) <br /> Northbound Right (to Loop) - A ( 2.7) <br /> Southbound ThrouQh B (19.5) A ( 7.4) <br /> Westbound Left E (70.4) D (45.6) <br /> AM Intersection Average C (23.3) B (12.0) <br />PM Peak Hour <br /> Northbound Left D (53.0) - <br /> Northbound Through B (11.6) B (17.1) <br /> Northbound Right (to Loop) - A ( 2.2) <br /> Southbound Through B (12.3) A ( 1.6) <br /> Westbound Left E (58.2) D (53.4) <br /> PM Intersection Average B (19.4) B (14.2) <br /> <br />Note: The westbound right and southbound right movements generally flow freely at <br />this location, and so are not included in the delay summary. <br /> <br />Cons <br />. Total cost of the loop is projected to be $7 million more than the double left turn <br />configuration ($12 million versus $5 million). <br /> <br />1 <br /> <br />19 <br />