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Department of Public Works

  • La Loma Bridge Project

    The La Loma Bridge, originally constructed in 1914, is undergoing a seismic retrofit and rehabilitation.  The bridge will be closed for 18 months, with construction beginning in summer 2015 and the anticipated completion in winter 2016. The scope of the project involves replacement of bridge deck; rehabilitation of the arches and spandrel columns; and strengthening the end piers.  The estimated cost of the project is approximately $16 million.  Project funding consists of $13.3 million in federal funds and $2.7 million City funds. The La Loma Bridge Project is a collaborative effort between the City of Pasadena and the California Department of Transportation (Caltrans).

    During construction traffic will be detoured to other bridges across the Arroyo Seco.  Residents will be able to cross using the Colorado Boulevard Bridge to access areas north of La Loma Bridge, and will be able to use the San Rafael Bridge to access areas south of La Loma Bridge.  The Department of Public Works is creating a traffic management plan to assist the flow of traffic.   

     

    Project Fact Sheet

     

     La Loma Bridge Fact Sheet July 2015 

     

    Project Updates - 

     
     

    February 2016

     
    Bridge deck demolition continues throughout the month.  The contractor begun excavation sub-structure work for the new bridge deck.
     
     
     
    Project Progress Photos For February 2016 

     
    Overview of Project Site during Bridge Demo
     

     Overview of project site during bridge demolition

     
     
     Bridge Removal 

      
     
    Progress of bridge demolition

     
     
    Removal of Existing Abutment and Retaining Walls 

     
     
    Removal of Existing Abutment and Retaining Walls

     

     

    January 2016

     
    Bridge deck demolition is underway and is expected to continue through February.  The contractor anticipates beginning work on the sub-structure for the new bridge deck in February.
     

     
    Project Progress Photos For January 2016 

     
    Demolition of Bridge - View of South Side
     
     
    Progress of bridge demolition - view of South side of bridge

     
    Process of Bridge Demolition
     
     
    Bridge demolition 

     
     Progress of Bridge Demolition
     
     
     Bridge demolition - continuation
     
     
     

    December 2015

     
    Construction of the temporary sewer bypass is currently underway.  The contractor will mobilize equipment in preparation for demolition of the existing bridge in late December and continue through January 2016.  Demolition of the existing bridge will begin January 4, 2016.  

    Project Progress Photos For December 2015 

     
    Placement of Aluminum Joist
     
      
    A view of North side of bridge, looking West, depicting the placement of aluminum joist, from falsework bent, westward, over cantilever transverse beams. 
       

     View of Southern side of Soffit Platform 

     
    A view of the Southern outer cantilever soffit platform, which started at falsework bent 44, looking West. A worker is beginning to install the protective handrail.   
       

     Progress Work on the Soffit Platform 
     

     Another progress work view of the construction of the southern outer cantilever portion of the falsework soffit.  The handrail is already in place in parallel line to the bridge, looking West. 

     

     
     

    November 2015

    A majority of the work continues below the bridge for the next couple of months.  The contractor has been erecting vertical elements of the falsework.  The trail on the east side of the channel under the bridge will be closed intermittently between 7 a.m. to 4 p.m., Monday - Friday, from mid-October 2015 (while constructing overhead elements) through December 2015 (during removal of existing bridge).  Signs will be posted designating a detour trail route. Preparations to construct a temporary bridge to transport heavy equipment to the west side of the channel are also underway.

     

     Project Progress Photos For November 2015  

     
     Installation of Falsework Beam
     
      
     Installing falsework beam on the south side of the bridge
     

     Erecting Top Cap Beam 

       
    Erecting top cab beam at falsework bent

     
    Installation of Longitudinal Cable 
     
     
    Installing longitudinal cable bracing at top cap beams
     
     
     

    October 2015

    The asphalt concrete has been removed from the bridge deck.  A majority of the work is occurring below the bridge.  A pedestrian cover and support foundations for the “falsework” that will be constructed are underway.  The contractor has begun erecting the vertical elements of the falsework.  The trail on the east side of the channel under the bridge will be closed intermittently between 7 a.m. to 4 p.m., Monday - Friday, from mid-October 2015 (while constructing overhead elements) through December 2015 (during removal of existing bridge).  Signs will be posted designating a detour trail route.  Preparations to construct a temporary bridge to transport heavy equipment to the west side of the channel are also underway.
     
     

    Project Progress Photos For October 2015 

     
     Installing Posts 
     
    Installing posts - the posts will be used to protect debris from falling into the Arroyo Seco during the demolition of the existing bridge and support the framework during the construction of the new bridge

     
    Drilling Micropiles
     
     
    Drilling micropiles - micropiles are the foundation system for supporting the new bridge
     
     

    September 2015

    Pasadena Water and Power Department completed the power main and vault relocation efforts on La Loma Road.  The City is coordinating remaining utility relocations.   

    Traffic has been detoured to other bridges across the Arroyo Seco.  Motorists are able to cross using the Colorado Boulevard Bridge to access areas north of La Loma Bridge, and are able to use the San Rafael Bridge to access areas south of La Loma Bridge.  The Department of Public Works has created a traffic management plan to assist the flow of traffic featured on the subsequent page. 

    The contractor mobilized in July 2015 and the bridge was closed on Monday, July 27, 2015.  The asphalt concrete has been removed from the bridge deck and the east side trail cover is under construction.  A majority of the work is occurring below the bridge.  A pedestrian cover and support foundations for the “falsework” that will be constructed are underway.  Preparations to construct a temporary bridge to transport heavy equipment to the west side of the channel are also underway. It is anticipated that La Loma Bridge will re-open in December 2016. 

     

    Project Progress Photos for September 2015 

      

    Pedestrian Access Tunnel Under La Loma Bridge 

     Building pedestrian access tunnel under La Loma Bridge

        

    Verification of Micropiles 

    Verification testing of micropiles

     

    Excavation Under La Loma Bridge 

     Excavation underneath La Loma Bridge 

        

     

    Project Timeline

     

    • Construction Mobilization Date: June 2015
    • Bridge Closure Date: July 2015
    • Anticipated Bridge Opening Date: December 2016
     
     
     
     

    Traffic Management Plan & Detours

     

    Primary Detour Map 

     
     
     
     
     Primary Detour Map Small 0304 
     

     Local Access Map

        
     
       Local Access Map small 0304 
     

     

    Arroyo Seco Trail Access

    Please note changes in Lower Arroyo Seco Trail access beginning July 2015 through December 2016.

     
     
    *Beginning October 2015 through January 2016, trail access on the east side of the channel (under La Loma Bridge) will be closed between 7 a.m. to 4 p.m., Monday - Friday. Signs will be posted designating a detour trail route.*  
     
    • Trail access closure at La Loma Bridge
    • Trail closure: West side, North and South of La Loma Bridge
    • Limited trail access: East trail will be open during construction with a wood covered passageway through the construction  zone. Periodic closures will occur and a detour route is shown on the map below.  Equestrian access is available; ride with caution.

        
     

     La Loma Bridge Renovation Trail Access & Detour Map 

     

     

    Construction Hours

     

    • Typical construction hours:  Monday through Friday from 7:00 a.m. to 4:00 p.m.
    • Pasadena Municipal Code allows for work from 7:00 a.m. to 7:00 p.m. 

     

     

     

    For more information, please contact Yesenia Alvarado, Management Analyst at (626) 744-7033 or via e-mail at yalvarado@cityofpasadena.net.

     

     

     

    Last updated: January 2016

     
     
     


     

     


     

     
     

     

     

      

     
     
     
     
     

     

     
     

     

     
     

     

     


     

     
Water Usage Gauge