Robinson Road and Greenhurst Road Railroad Overpass

Robinson Road and Greenhurst Road Railroad Overpass

Thank you for your interest in the project!
There are two alternative options for the new Greenhurst Road intersection with the jug handle connector road: the roundabout and signalized intersection options. The benefits and disadvantages of each option are outlined here so you can answer a couple of questions about your preferences for each option.

OPTIONS FOR GREENHURST ROAD INTERSECTION
Option 1: Roundabout Intersection

Benefits or Neutral (as compared with Option 2)
- Highest estimated crash reduction rate. The roundabout will slow drivers through the intersection and is estimated to reduce fatal and injury crashes by 61% compared to the existing roadways and intersections.
- Fewer delays. Drivers will experience an average delay of 9.75 seconds. Without improvements, drivers will experience more than 50 seconds of delay.
- Greenhurst Road may be able to remain open until the Greenhurst roundabout is constructed.
Disadvantages (as compared with Option 2)
- Larger project footprint. Requires approximately 10 acres of additional right-of-way to construct the project, which is 1 acre more than the signalized intersection.
- Higher overall estimated costs. Estimated concept level construction cost is $36.6 million, which is $2.4 million more than the signalized intersection.
- Impacts five irrigation crossings compared to four with the signalized intersection.
- Requires extended closures for both the north and south sides of Robinson Road.
Option 2: Signalized Intersection

Benefits or Neutral (as compared with Option 1)
- Reduction in delays. Drivers will experience an average delay of 12.0 seconds. Without improvements, drivers will experience more than 50 seconds of delay.
- Smaller project footprint. Requires approximately 9 acres of additional right-of-way to construct the project, which is 1 acre less than the roundabout intersection.
- Lower overall estimated costs. Estimated concept level construction cost is $34.2 million, which is $2.4 million less than the roundabout intersection.
- Impacts four irrigation crossings compared to five with the roundabout intersection.
- Shortens construction duration and closure of Greenhurst Road compared to the roundabout option.
Disadvantages (as compared with Option 1)
- A 50% reduction in fatal and injury crashes is estimated compared to existing roadways and intersections. This is less than the 61% reduction expected as a result of the roundabout option.
- Requires extended closures for both the north and south sides of Robinson Road.
Questions about Intersection Options

Your participation is important to the success of this project! Please fill out the community survey form. While your comments are always welcome, they can be best used if received by August 4, 2025.
1. What do you think of the roundabout intersection?

Love itLike itNeither like nor dislikeDislike itStrongly dislike
2. What do you think of the signalized intersection?

Love itLike itNeither like nor dislikeDislike itStrongly dislike
3. Do you prefer the roundabout intersection or the signalized intersection?

Roundabout intersectionSignalized intersectionNeitherEither
4. If you prefer the roundabout intersection, why?
5. If you prefer the signalized intersection, why?
General Comment Questions
6. Is your address on Robinson Road between Cruse Lane and Greenhurst Road?

YesNoPrefer not to say
7. Do you use the existing four-way stop intersection of Robinson Road and Greenhurst Road at least once per week?

YesNoPrefer not to say
8. Would you like to be added to the mailing list? If so, please enter your contact information below.
Your comments and contact information become part of the permanent record for this project. By including your email address, you are giving permission to be added to the project’s stakeholder database and you will receive email updates on this project. You can unsubscribe from updates at any time.
9. How did you hear about this project? (Check all that apply)

PostcardEmailWord of mouth (i.e., from your neighbor, friends, or family)Facebook/InstagramXCity of Nampa newsletterOther
Thank you for your participation and for sharing valuable insights into your community's needs and the performance of the roadways you use.
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