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I-580/Isabel Interchange
Description: The project includes construction of a new interchange at Isabel Ave (SR 84) in the I-580 corridor, including eastbound and westbound auxiliary lanes between Isabel Ave and Airway Blvd.

  • Project Information
  • Contacts
  • Cost by Fund Source
  • Cost by Component
  • Schedule
  • Map
  • Closeout Info
Project Location
County
 Alameda
City Livermore
Zip Code 94551
 
Senate District
 09, 10
Assembly District 15, 18
Congressional District 10, 11
 
Caltrans District
 04
 
 
County/State Route Alameda 580
Postmile Begin/End R  13.1 R  14.4
Project Benefits
 Benefit Baseline Actual
Daily Travel Time Savings (hours)  814    814  
Lane Miles Added (HOV)  0      
Peak Period Time Savings (minutes)  194000    194000  
 
Project Contacts Agency Contact Person Telephone E-mail
Environmental Phase
 City of Livermore Arthur L. Dao 510-836-2560   adao@actia2022.com
Design (PS&E) Phase
 City of Livermore Arthur L. Dao 510-836-2560   adao@actia2022.com
Right of Way Phase
 City of Livermore Arthur L. Dao 510-836-2560   adao@actia2022.com
Construction Phase
 Caltrans Cristina Ferraz (510) 286-3890   cristina_ferraz@dot.ca.gov
 
Corridor System Management Plan
 Caltrans Juliana Gum (510) 286-4579   juliana_gum@dot.ca.gov
Project Cost Baseline Summary (Dollars Shown are in Thousands) 2
  Adopted Program
(06/07/07)
a		 Approved Changes
(12/31/2023
b=c-a		 Current Approved
(12/31/2023
c
Bond Funding
CMIA
 $68,000 $-22,873 $45,127
Non-bond Funding
State/Federal*
 $0 $0 $0
Local**
 $85,000 $-6,640 $78,360
Non Budgeted ETC
 $0 $0 $0
 
Total**** $153,000 $-29,513 $123,487

**** Totals may not add up exactly to column amounts due to rounding

# Approved is planned budget

Project Cost Baseline Summary (Dollars Shown are in Thousands)
  Adopted Program
(06/07/07)
a		 Approved Changes
(12/31/2023
b=c-a		 Current Approved
(12/31/2023
c		 Cost to Date**
(12/31/2023
d
 
Environmental
 $14,300 $-3,200 $11,100 $3,100
Design(PS&E)
 $15,000 $-2,000 $13,000 $10,800
Right of Way
 $20,900 $3,100 $24,000 $21,876
Construction
 $102,800 $-27,413 $75,387 $55,009
 
Total* $153,000 $-29,513 $123,487 $90,785

* Totals may not add up exactly to column amounts due to rounding

** Totals include all actual project funds expenditures. Cost to date expenditure variances are explained in quarterly reports and/or Close-out reports.

Project Schedule Baseline Summary
(Schedule Changes and Variances in Months) Adopted Program
(06/07/07)
a		 Approved Changes
(mm/dd/yyyy)
b		 Current Approved
(12/31/2023)
c		 % Complete
(12/31/2023)
d		 Schedule Forecast
(12/31/2023)
e		 Schedule Variance
(months)
f=c-e
Begin Environmental Phase
End Environmental Phase
 10/01/2005 
08/01/2007 		  
 		 10/01/2005 
08/01/2007 		 100  01/05/2000 
08/15/2007 		 69 
0 
Begin Design (PS&E) Phase
End Design (PS&E) Phase
 06/01/2001 
08/01/2008 		  
 		 06/01/2001 
10/01/2008 		 100  06/01/2001 
10/24/2008 		 0 
-1 
Begin Right of Way Phase
End Right of Way Phase
 08/01/2007 
08/01/2008 		  
 		 08/01/2007 
08/01/2008 		 100  09/01/2007 
07/24/2008 		 -1 
0 
Begin Construction Phase
End Construction Phase
 02/01/2009 
01/01/2012 		  
 		 06/01/2009 
03/01/2012 		 100  06/22/2009 
04/09/2012 		 -1 
-1 
Begin Closeout Phase
End Closeout Phase
 03/01/2012 
03/01/2013 		  
 		 03/01/2012 
03/01/2013 		 75  05/01/2012 
07/01/2013 		 -2 
-4 
Corridor System Management Plan
Adoption Date     12/01/2009  100  05/01/2010  -5 
Implementation Date     12/01/2009  0  06/01/2010  -6 
????????
Project Benefits
Benefit Baseline Actual
Daily Travel Time Savings (hours) 814 814
Lane Miles Added (HOV) 0
Peak Period Time Savings (minutes) 194000 194000

Bond Funding Cost
Adopted:
 $68,000,000
Current Approved:
 $45,258,000
Actual Expenditures:
 $43,671,000

 

Status as of December 31, 2023.