AVERAGE DELAY PER VEHICLE EXISTING CONDITIONS AND NO BUILD ALTERNATIVE

Transcription

1 AVERAGE DELAY PER VEHICLE EXISTING CONDITIONS AND NO BUILD ALTERNATIVE EXISTING CONDITIONS (1) NO BUILD ALTERNATIVE () Compared to existing conditions Peak Hour/Train Scenario No Train 1 With Train No Train 1 With Train 3 7: am : am Midday 1:3 pm 1:3 pm : pm : pm 3 seconds 7 seconds 9 seconds (3% more) seconds seconds 1 seconds (% more) 9 seconds 71 seconds 19 seconds (3% more) 99 seconds (11% more) 1 seconds (17% more) 7 seconds (% more) Note: Traffic simulation reflects the 3-hour peak period from 3:pm :pm with average delay per vehicle results shown for the peak hour of :pm :pm. The presence of trains crossing legs of the project intersection has a distinctly different effect on roadway operations compared to operations when no trains are present, so two traffic scenarios were analyzed: no train crossing and with train crossing. 1. Analysis assumes no trains are traveling on either the Reynolds Lead or IRC.. Analysis assumes one industry train traveling westbound on the Reynolds Lead. 3. Analysis assumes one unit train traveling westbound on the Reynolds Lead during the peak period. Analysis assumes two unit trains during the Midday and peak periods; one westbound train on the Reynolds Lead and one eastbound train on the IRC; trains travel time separated by 1 hour.

2 AVERAGE DELAY PER VEHICLE GSA AND PGSB ALTERNATIVES NO BUILD ALTERNATIVE () GSA ALTERNATIVE () PGSB ALTERNATIVE () Peak Hour/Train Scenario No Train 1 With Trains No Train 1,3 With Trains,3 No Train 1 With Trains 7: am : am 9 seconds 99 seconds seconds (1% less) seconds (% less) seconds (% less) seconds (7% less) Midday 1:3 pm 1:3 pm 1 seconds 1 seconds seconds (3% less) seconds (7% less) 7 seconds (% less) 7 seconds (% less) : pm : pm 19 seconds 7 seconds 1 seconds (% less) 1 seconds (% less) 99 seconds (% less) 1 seconds (% less) Note: Traffic simulation reflects the 3-hour peak period from 3:pm :pm with average delay per vehicle results shown for the peak hour of :pm :pm. The presence of trains crossing legs of the project intersection has a distinctly different effect on roadway operations compared to operations when no trains are present, so two traffic scenarios were analyzed: no train crossing and with train crossing. 1. Analysis assumes no trains are traveling on either the Reynolds Lead or IRC.. Analysis assumes one unit train traveling westbound on the Reynolds Lead during the peak period. Analysis assumes two unit trains during the Midday and peak periods; one westbound train on the Reynolds Lead and one eastbound train on the IRC; trains travel time separated by 1 hour. 3. Due to all the intersection legs being grade-separated from railroads under the GSA Alternative, average delay per vehicle is the same for the no train and with train scenarios.

3 APPROACH QUEUES WITH TRAIN CROSSINGS EXISTING CONDITIONS (1), 7,,,, 3,, NB Queues on Oregon Way at rail crossing north of Industrial Way NB Queues on SR 33 approaching Industrial Way SB Queues on Oregon Way at rail crossing north of Industrial Way EB Queues on Industrial Way approaching rail crossing west of Oregon Way WB Queues on Industrial Way approaching Oregon Way Note: Queues less than 1 foot not shown GSA ALTERNATIVE (), 7,,,, 3,, NB Queues on SR 33 approaching Industrial Way SB Queues on Oregon Way approaching Industrial Way EB Queues on Industrial Way approaching rail crossing west of Oregon Way WB Queues on Industrial Way approaching Oregon Way Note 1: Queues less than 1 foot not shown Note : All queues are measured at the elevated intersection 1, 1, 3: 3: 3:1 3: 3: 3:3 3: 3: 3: : : :1 :1 : : :3 :3 : : : : : : :1 :1 : : :3 : : : : Time () 3: 3: 3:1 3: 3: 3:3 3: 3: 3: : : :1 :1 : : :3 :3 : : : : : : :1 :1 : : :3 : : : : Time () FUTURE NO BUILD CONDITIONS (), 7,,,, 3, NB Queues on Oregon Way at rail crossing north of Industrial Way NB Queues on SR 33 approaching Industrial Way SB Queues on Oregon Way at rail crossing north of Industrial Way EB Queues on Industrial Way approaching rail crossing west of Oregon Way WB Queues on Industrial Way approaching Oregon Way Note: Queues less than 1 foot not shown PGSB ALTERNATIVE (), 7,,,, 3, NB Queues on Oregon Way at rail crossing north of Industrial Way (at-grade) NB Queues on SR 33 approaching Industrial Way (elevated intersection) SB Queues on Oregon Way at rail crossing north of Industrial Way (at-grade) EB Queues on Industrial Way approaching rail crossing west of Oregon Way (at-grade) WB Queues on Industrial Way approaching Oregon Way (at-grade) Note: Queues less than 1 foot not shown,, 1, 1, 3: 3: 3:1 3: 3: 3:3 3: 3: 3: : : :1 :1 : : :3 :3 : : : : : : :1 :1 : : :3 : : : : Time () 3: 3: 3:1 3: 3: 3:3 3: 3: 3: : : :1 :1 : : :3 :3 : : : : : : :1 :1 : : :3 : : : : Time ()

4 ESTIMATED ROADWAY BLOCKAGE AND RECOVERY TIMES FOR THE WESTBOUND MOVEMENT NO BUILD ALTERNATIVE Vehicle Volume (vehicles per hour) 1, 1, 1, Vehicle Volume Blockage and Recovery Time from Overlapping Blockage and Recovery Times 1: 1: : 3: : : : :1 7:1 :1 9: 1: 1: 11:1 1: 1: :3 : :1 :1 : 7: 7:1 : 9: 1: 11: Time GSA ALTERNATIVE Vehicle Volume (vehicles per hour) 1, 1, 1, Vehicle Volume Blockage and Recovery Time from Overlapping Blockage and Recovery Times 1: 1: : 3: : : : :1 7:1 :1 9: 1: 1: 11:1 1: 1: :3 : :1 :1 : 7: 7:1 : 9: 1: 11: Time PGSB ALTERNATIVE 1, 1, 1, 1: 1: : 3: : : : :1 7:1 :1 9: 1: 1: 11:1 1: 1: :3 : :1 :1 : 7: 7:1 : 9: 1: Vehicle Volume (vehicles per hour) 11: Total Vehicle Volume Vehicle Volume for Surface Roundabout Blockage and Recovery Time from Overlapping Blockage and Recovery Times Time Note: The westbound approach to the intersection, which would be the heaviest traffic movement, is shown.

5 EMERGENCY SERVICE CRITICAL ROUTES N LONGVIEW Cowlitz Fire & Rescue. 1 Miles 3 St. John s Medical Center Longview Fire Deptpartment 11 KELSO Cowlitz River Columbia County 33 Cowlitz County 3 To Clatskanie Rural Fire Protection District 3 WASHINGTON OREGON RAINIER WA St. John s Medical Center To Fire & Rescue Clatskanie Rural Fire Protection District N 3 OR 1 Miles 3 Fire & Rescue 3 Study Area Clatskanie Rural Fire Protection District Fire & Rescue Longview Fire Department Cowlitz Fire & Rescue NO BUILD ALTERNATIVE Compared to existing conditions GSA ALTERNATIVE PGSB ALTERNATIVE Response Times and Travel Reliability» Slower response times» Decreased reliability» Improved response times» Increased reliability» Improved response times» Increased reliability Blocked by Trains» All routes travel on surface roads with at-grade railroad crossings» All routes blocked minutes when trains present» All routes elevated and separated from railroads» No routes blocked when trains present» All routes elevated, including east-west routes that would have special provisions to use elevated structure» No routes blocked when trains present

6 COMPARISON OF INTERSECTION AND BRIDGE IMPROVEMENTS SEQUENCE GSA ALTERNATIVE GSA Alternative: 79% total reduction in delay Make intersection improvements first then bridge improvements % 39% Make bridge improvements first then intersection improvements 1% Percent of reduction in delay for making intersection improvements Percent of reduction in delay for making bridge improvements % PGSB ALTERNATIVE PGSB Alternative: 7% total reduction in delay Make intersection improvements first then bridge improvements % 7% Make bridge improvements first then intersection improvements 1% Percent of reduction in delay for making intersection improvements Percent of reduction in delay for making bridge improvements 7%

7 TRAFFIC COUNTS 1 Industrial Way (SR 3) West of Oregon Way Oregon Way North of Industrial Way 1, 1, TOTAL 1, 1, TOTAL 1, 9 INDUSTRIAL WAY (SR 3) REYNOLDS LEAD OREGON WAY 1, SR 33 South of Industrial Way REYNOLDS LEAD INDUSTRIAL WAY (SR 3) INDUSTRIAL RAIL CORRIDOR Industrial Way East of Oregon Way 1 1, 1, TOTAL SR 33 1, 1, TOTAL 1, 1, N , FT