Alameda Del Prado / Nave Drive

The interchange at Alameda Del Prado and Nave Drive is in the city of Novato. It provides access to the Pacheco Valley and Hamilton neighborhoods, and the Pacheco Valley and Loma Verde Open Space Preserves. There are several existing physical and operational deficiencies associated with this interchange, such as nonstandard lane and shoulder widths, vertical clearance over Highway 101, and lack of continuous bicycle and pedestrian routes. These are described in the Existing Conditions, Constraints, and Opportunities Report below.

Interchange Improvements

The improvements TAM wants to make vary from easy fixes such as new crosswalks, curb ramp replacements and restriping, to more time-consuming solutions, such as new bike facilities, improved multimodal connectivity and widened bridges. The study examined the following to gain an important understanding of the interchange area:

  • Existing Infrastructure
  • Transit Routes and intermodal connectivity
  • Weekday AM & PM Peak Period Congestion
  • Crash Type and Severity
  • Environmental Constraints

 

Many of the recommended improvements will enhance the operation and safety of these interchanges for all users, allowing smoother travel to, from, and across Highway 101 and local roads.

The near-term improvement concept focuses on improving connectivity for all modes by reducing conflicts, and improving traffic operations. It also provides new signalized intersections on Nave Drive at the northbound hook off-ramps and at Alameda Del Prado.

The long-term concept replaces the existing overcrossing with a compact diamond interchange configuration that supports standard vertical clearance over Highway 101 and eliminates the short acceleration and deceleration distances associated with the existing hook ramps.

Public and Agency Input

Between March and April 2021, TAM surveyed residents of Marin to collect input about the 12 selected interchanges. More than 2,750 people responded to the survey. The survey was launched to gather the public’s thoughts and priorities on improvements to the interchange. TAM has incorporated the feedback received to ensure the project reflects community values and preferences.

In the survey, 36 people commented on Alameda Del Prado. Residents rated the level of importance for eight potential improvements on a 5-point scale ranging from not important to most important. A summary of the survey results and comments received is included in the interchange report.

Most respondents said making it safer to walk and bike around this interchange is the most important improvement to this interchange.

Make it safer to walk around this interchange

0 %
Low
Importance
0 %
No
Opinion
0 %
High
Importance

Make it safer to bike around this interchange

0 %
Low
Importance
0 %
No
Opinion
0 %
High
Importance

Reduce traffic congestion

0 %
Low
Importance
0 %
No
Opinion
0 %
High
Importance

Improve the quality and access to bus stops near this interchange

0 %
Low
Importance
0 %
No
Opinion
0 %
High
Importance

Make it easier to drive to and from this interchange

0 %
Low
Importance
0 %
No
Opinion
0 %
High
Importance

Improve lighting and security

0 %
Low
Importance
0 %
No
Opinion
0 %
High
Importance

Increase Park and Ride capacity

0 %
Low
Importance
0 %
No
Opinion
0 %
High
Importance

Improve environmental sustainability and resiliency

0 %
Low
Importance
0 %
No
Opinion
0 %
High
Importance

The entire 101 corridor needs to become more walk/bike friendly. With regards to this interchange, it would be nice to have dedicated lanes, visible signage, and a more direct route to the Lagoon.

Comments regarding this interchange?
Your remarks will be noted and saved for possible future phases of improvement.