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Westbound I-580 to Northbound 101 Connector Improvements
Description: On I-580 from one mile east of Bellam Blvd to US 101, and on US 101 from the 101/580 Interchange to the 2nd St off-ramp.

  • Project Information
  • Contacts
  • Cost by Fund Source
  • Cost by Component
  • Schedule
  • Map
  • Closeout Info
Project Location
County
 Marin
City Larkspur, San Rafael
Zip Code 94901, 94904, 94925, 94939, 94964
 
Senate District
 03
Assembly District 06
Congressional District 06
 
Caltrans District
 04
 
 
County/State Route Marin 580
Postmile Begin/End 3.8 4.8
 
County/State Route Marin 101
Postmile Begin/End 10 10.8
Project Benefits
 Benefit Baseline Actual
Daily Travel Time Savings (hours)  158    158  
Lane Miles Added (Mixed)  3.0      
Peak Period Time Savings (minutes)  12545    12545  
 
Project Contacts Agency Contact Person Telephone E-mail
Environmental Phase
 Transportation Authority of Marin Dan Cherrier (415) 226-0829   dcherrier@tam.ca.gov
Design (PS&E) Phase
 Transportation Authority of Marin Dan Cherrier (415) 226-0829   dcherrier@tam.ca.gov
Right of Way Phase
 Transportation Authority of Marin Dan Cherrier (415) 226-0829   dcherrier@tam.ca.gov
Construction Phase
 Caltrans Doanh Nguyen (510) 286-6128   doanh_nguyen@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
 $20,000 $-3,015 $16,985
Non-bond Funding
State/Federal*
 $0 $0 $0
 
Total**** $20,000 $-3,015 $16,985

**** 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
 $1,300 $-31 $1,269 $1,269
Design(PS&E)
 $2,900 $-44 $2,856 $2,856
Right of Way
 $500 $-349 $151 $0
Construction
 $15,300 $-2,590 $12,710 $12,621
 
Total* $20,000 $-3,015 $16,985 $16,746

* 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
 07/01/2007 
01/01/2008 		  
 		 07/11/2007 
01/01/2008 		 100  11/01/2007 
01/31/2008 		 -3 
-1 
Begin Design (PS&E) Phase
End Design (PS&E) Phase
 07/01/2007 
11/01/2008 		  
 		 07/01/2007 
03/01/2009 		 100  11/01/2007 
03/12/2009 		 -4 
0 
Begin Right of Way Phase
End Right of Way Phase
 01/01/2008 
11/01/2008 		  
 		 01/01/2008 
11/01/2008 		 100  01/02/2008 
10/31/2008 		 0 
0 
Begin Construction Phase
End Construction Phase
 03/01/2009 
07/01/2010 		  
 		 11/04/2009 
03/31/2011 		 100  11/04/2009 
01/27/2011 		 0 
2 
Begin Closeout Phase
End Closeout Phase
 08/01/2010 
01/01/2011 		  
 		 03/31/2011 
03/01/2012 		 100  01/28/2011 
07/30/2012 		 2 
-5 
Corridor System Management Plan
Adoption Date 09/01/2010    09/01/2010  0    0 
Implementation Date 09/01/2010    09/01/2010  0    0 
????????
Project Benefits
Benefit Baseline Actual
Daily Travel Time Savings (hours) 158 158
Lane Miles Added (Mixed) 3.0
Peak Period Time Savings (minutes) 12545 12545

Bond Funding Cost
Adopted:
 $20,000,000
Current Approved:
 $17,852,000
Actual Expenditures:
 $16,738,000

 

Status as of December 31, 2023.