Maintaining Traffic During the Gerald Desmond Bridge Replacement Project Port of Long Beach Long Beach CA Prepare the Detour Plans for multiple stages of construction Prepare the Traffic Impact Study which identified impacts of detoured traffic during construction Prepare design plans for temporary traffic signals and temporary lighting Provide Traffic Control Manager services until project completion
The 4.5 Square Mile Island lies on San Pedro Bay, approximately 20 Miles south of Downtown LA Primary Land Uses are Port of Long Beach (POLB), Port of Los Angeles (POLA) and a Federal Prison Supports 50% of POLB and POLA Terminal Capacity and 60% of the On Dock Intermodal Capacity Containers are either loaded on trucks (85%) or on rail cars (15%)
◦ Three Vehicle Bridges Provide Access
◦ Gerald Desmond-direct connections to the Long Beach Freeway (I-710) and to Downtown Long Beach
◦ Schuyler Heim-connection to the Alameda Corridor and San Diego Freeway (I-405)
◦ Vincent Thomas-direct connection to the Harbor Freeway (I-110)
Gerald Desmond Schuyler Heim
Vincent Thomas
Vincent Thomas Bridge Existing Schuyler Heim Bridge New Schuyler Heim Bridge
Opened in 1968 Originally a 4 lane bridge with a pedestrian walkway Later modified to accommodate 5 lanes-3 climbing lanes merge to 2 lanes near the top of the bridge in both directions Provides 155 feet of vertical clearance over the Cerritos Channel to the Back Bay PM Peak Hour volumes of up to 3,400 vehicles and 850 trucks (both directions) Gerald Desmond Bridge-Looking West
Gerald Desmond Bridge-Looking East
Design-Build Project began in 2012 Will have 6 lanes, a bike path/pedestrian walkway and scenic overlooks Will provide 205 feet of vertical clearance over the Cerritos Channel Currently planned to open in March 2018 Current estimated cost is $1.4 B New Gerald Desmond Bridge Bike Path, Pedestrian Walkway & Scenic Overlooks Progress as of June 30, 2015-West End
East End
Began in September 2012 Used counts taken in 2010 factored to 2012 Converted trucks to PCE’s Assumed no diversions to alternate routes Calculated AM/PM Peak Hour LOS at 4 intersections on the west side for existing and 10 stage construction scenarios LOS E acceptable (LOS F with POLB approval) Mitigations were primarily signal timing changes Still expect 10 Separate LOS F Scenarios
Calculated AM/PM Peak Hour LOS at 6 existing intersections and 1 future temporary intersection on the east side for existing and 6 stage construction scenarios Mitigations were primarily temporary signals and signal timing changes Were able to mitigate all locations to LOS E or better TMP with MOT Traffic Analysis approved in November 2013 Study Intersections
Detour W1 Began in early 2014 Expected duration: 15 months Estimated AM/PM Peak Hour traffic volumes being detoured - 275/140 Calculated worse case peak hour operating conditions was LOS E Pier T Off Ramp Demo
Detour E1
Provided a second free right turn lane from the SB I-710 Off Ramp to Pico Avenue Restriped Pico Ave from 4 to 5 lanes (to provide 3 SB lanes) and installed a temporary signal at Pico Avenue/Pier D Street Installed wireless interconnect on Pico Avenue between the existing signal at Pier C Street and the temporary signal at Pier D Street Implemented signal timing changes to favor the SB through movement on Pico Avenue
Went in effect in May 2014 Expected duration: 23 months Estimated AM/PM peak hour traffic volumes being detoured onto Pico Avenue - 1225/1000 Calculated worse case peak hour operating conditions was LOS D Based on a recent peak hour count of vehicles SB on Pico Avenue at Pier C Street, there has been negligible diversion of the detour traffic to other routes SB I-710 to WB Ocean Blvd Connector Demo
Detour E2
Expected duration: 6 months Estimated volume of AM/PM Peak Hour traffic being detoured - 960/990 Calculated worse case peak hour operating conditions was LOS D Detour E3
Expected duration: 6 months Estimated volume of AM/PM Peak Hour traffic being detoured – 1200/1575 Calculated worse case peak hour operating conditions was LOS E Detour E4
Expected duration: 9 months Estimated volume of AM/PM Peak Hour traffic being detoured – 1925/1750 Calculated worse case peak hour operating conditions was LOS E Detour W4
Expected duration: 2 months Estimated volume of AM/PM Peak Hour traffic being detoured – 2130/2570 Calculated worse case peak hour operating conditions was LOS F Detour Experience to Date Detour E1
Pico Avenue SB Ramp to WB Ocean Blvd
After After Before After After Pontoon Bridge-1944 to 1968