Existing Conditions
Looking north above Cal Park Hill at US 101 shows the afternoon traffic backup in the right lane exit to Bellam Boulevard.
Looking northeast to East San Rafael shows US 101 and the Cal Park Hill bike path in the foreground, I-580 in the middle distance, and San Pablo Bay in the far distance. Project alternatives would connect between US 101 and I-580 in this general vicinity.
Proposed Alternatives
Alternative 1
Est. cost $20-50M
Alternative 1 would include Bellam Corridor improvements for vehicles, bicycles, and pedestrians to address congestion and safety and would span less than half a mile.
Safety enhancements would consist of new or improved sidewalks and bicycle lanes between the east and west sides of I-580 along Bellam Boulevard from Andersen Drive to Kerner Boulevard.
This alternative is also reviewing design options for signalized intersection modifications and/or roundabouts.
Alternative 2
Est. cost $241M (Visual simulation)
Drivers would exit US 101 northbound near Bellam Boulevard and merge onto I-580 eastbound on a connector that crosses over the existing northbound US 101 / eastbound I-580 off-ramp.
Alternative 2 would also include all the improvements described in Alternative 1.
Alternative 3
Est. cost $192M (Visual simulation)
Drivers would exit US 101 northbound near Bellam Boulevard and merge onto I-580 eastbound on a connector that crosses over the existing northbound US 101 / eastbound I-580 off-ramp.
The connector has two lanes connecting the both freeways and provides an optional left-side exit to the existing Bellam Boulevard off-ramp.
Alternative 3 would also include all the improvements described in Alternative 1.