Projects | Nampa, ID | Nampa Highway District No. 1 (NHD)

Overview

Intersection Projects

Roadway Projects

Bridge Projects

Studies

Bid solicitations

Stormwater

Overview

Five Year Work Plan

Nampa Highway District publishes a fiscally constrained Five-Year Work Plan, which it updates annually. The principal types of projects listed in the plan are seal coats, overlays, rebuilds, and new construction. It does not show smaller projects, such as ditch cleaning, culvert replacement, sign replacement, crack sealing, or emergent repairs.

Roadway

Roadway projects are designed to improve safety and to improve traffic flow. Roadway projects may include seal coat, overlay, rebuild and new construction.

Studies

Traffic Studies are designed to improve safety and traffic flow in addition to future planning for transportation projects throughout the Nampa Highway District.

Stormwater

Stormwater is inclement weather water that flows over the ground and does not soak into the soil. For more information and to report stormwater issues, see stormwater tab.

Intersection project

Intersection projects are designed to improve traffic flow and public safety. They range from a full intersection redesign and rebuild to the addition of traffic signals.

Bridge

Nampa Highway District is responsible for bridges and culverts within the district. Regular inspections are performed to monitor for wear and to ensure we meet or exceed all State and Federal Standards.

Bid Solicitations

Nampa Highway District obtains public works construction, goods, and services via a sealed bid process. Contractors, suppliers, or vendors are invited to participate in open, advertised solicitation.

Intersection Projects

Intersection project

Roundabout Information

Roundabouts have become common in Canyon County during the past decade. Even though the public is now generally accustomed to them, some questions and concerns continue to persist; most of these are addressed in the videos and brochures discussed below.

Nampa Highway District is planning and designing several new roundabouts. Click on a Project location below for details about a specific roundabout project.

Educational Videos: Several educational videos are available regarding roundabouts. Two of them can be seen by clicking on the following links.

Modern Roundabout Myths (Minnesota Local Road Research Board)
Modern Roundabouts - A Safer Choice (Federal Highway Administration)

Further Reading. Please see the below articles for more information.

2016 Idaho Drivers Manual - Roundabouts

COMPASS Brochure - Roundabout Guide for Large Trucks & Oversize Vehicles

FHWA Brochure - Roundabouts, A Safer Choice

Northside and Cherry Roundabout

Location
This project is located at the intersection of Northside Blvd. and Cherry Ln. on the north side of Nampa

Description
The intersection is currently an all-way-stop configuration. The project will reconfigure the intersection into a roundabout.

Need for Project
This intersection is currently configured as an all-way-stop. A roundabout in this location is expected to improve safety and mobility for both the Northside Blvd. and Cherry Ln. corridors. The project will improve traffic flow along Cherry Ln. in conjunction with the existing Star and Cherry Ln roundabout.

Process/Schedule
The process and schedule for the project are currently as follows:

Design Consultant Selection – September 2021 (6 Mile Engineering)
Concept Report –Fall 2022
Preliminary Design – Fall 2022
Purchase of Right-of-Way – 2023
Final Design – Spring 2023
Construction – Spring/Summer 2024 (six month duration)

News Releases and Newsletters

Northside and Cherry-Concept Design

Middleton & Orchard Signal

Location
This project is located at the intersection of Middleton Rd. and Orchard Ave., on the west side of Nampa.

Description
The intersection currently has a two-lane, all-way-stop configuration. The project will replace the stop signs with traffic signals, and add through and turn lanes, along with curb, gutter, and sidewalk.

Need for Project
This project is needed to reduce congestion and improve traffic flow through the intersection. Approximately 12,000 vehicles per day pass through the intersection on Middleton Rd., and approximately 3,500 on Orchard Ave. These are relatively large volumes for an intersection with stop signs, and as a result traffic, back-ups regularly occur.

Length of the Project
Construction of this project has a duration of six months. While these improvements include installing a signalized intersection, it is much more than just installing a signal at the intersection. The intersection will be widened to add turn lanes, curb, gutter, and sidewalk. Also, while the intersection is being improved, we will be updating the City of Nampa’s water and sewer lines, which are over 20 feet deep through this intersection, as well as the gas lines that run under the road. These facilities are deep, and crews must get down to them, and replace them before beginning work on rebuilding and widening the intersection. The additional utility work has added significantly more time to this project, but it is a much-needed improvement for the residents of the City of Nampa. We appreciate your patience during the duration of this project.

Process/Schedule
The process and schedule for the project are currently as follows:

Select a Design Consultant – Parametrix was hired January 13, 2015
Public Meeting – an open house was held April 16, 2015, from 4:00 to 7:00 PM at the Nampa Church of the Brethren.
Concept Report – finalized June 5, 2015, and approved June 11, 2015
Preliminary & Final Design – completed November 9, 2015
Purchase additional Right-of-Way – in process
Public Meeting – early 2020
Construction – completed July 2022

City of Nampa Collaboration
The project is under the jurisdiction of and is being funded by the Nampa Highway District. The District and the City of Nampa will collaborate, however, due to the project’s close proximity to City Limits, and the likelihood the intersection will be annexed in the near future. As part of the collaboration, the project will conform to the City’s Long Range Transportation Plan, and the traffic signal equipment will be per City standards. The City is assisting the District in selecting a Design Engineering Consultant, and reviewing and commenting on the design. Once built, the City will also operate the traffic signal as part of its network.

Signal vs Roundabout
The Middleton & Orchard intersection will be signalized because Middleton Rd. and Orchard Ave. are already well developed as signalized corridors.
Several roundabouts have been built in the valley, and are performing well. They function best, however, on corridors with stop signs or other roundabouts further up and down the line. They are not as effective as signals on corridors which are predominantly signalized.

Middleton Rd. is already signalized at Roosevelt Ave., Karcher Rd., and Caldwell Blvd., and at Flamingo Ave. Likewise, Orchard Ave. already have signals to the east at Midland Blvd. and Caldwell Blvd.

News Releases and Newsletters

Middleton & Orchard - Notice of Construction

Middleton & Orchard TTC Plan

Graphics and Displays

Display Concept - Middleton 2022

Display Concept - Orchard 2022

Robinson & Locust Roundabout

Location
This project is located at the intersection of Robinson Blvd. and Locust Ln. on the south-east side of Nampa.

Description
The intersection is currently an all-way-stop configuration. The project will reconfigure the intersection into a roundabout.

Need for Project
This intersection is currently configured as an all-way-stop. A roundabout in this location is expected to improve safety and mobility for both the Robinson Blvd. and Locust Ln. corridors. The project will fit the context of a roundabout corridor for Robinson Blvd., which is also Robinson Rd. to the north of Victory Rd. This corridor currently has roundabouts at the intersections of Robinson & Victory, as well as Robinson & Amity.

The process and schedule for the project are currently as follows:
- Design Consultant Selection – October 2019 (Parametrix Engineering)
- Public Meeting – September 28th
- Online Meeting Details:
https://www.zoom.us/join/
Meeting ID: 760 549 5543
Passcode: 8520
- Concept Report – October 2020
- Preliminary Design – Winter 2020/2021
- Purchase of Right-of-Way –2021
- Final Design – Fall 2021
- Construction – Spring/Summer 2023 (six month duration)

News Releases and Newsletters
- 09-14-2020 Newsletter

Graphics and Displays
- Robinson-Locust Alternative 1 Centered
- Robinson-Locust Alternative 1
- Robinson-Locust Alternative 2

Robinson Rd. & Airport Rd. Roundabout

Location
This project is located at the intersection of Robinson Road and Airport Road on the east side of Nampa.

Description
The intersection is currently a two-way stop-controlled configuration. East and west traffic on Airport Road is stopped controlled while the north and south traffic is free flow on Robinson. The project will reconfigure the intersection into a roundabout.

Need for Project
This intersection is currently configured as a two-way stop-controlled. A roundabout in this location is expected to improve safety and mobility for both the Robinson Rd. and Airport Rd. corridors. The project will fit the context of a roundabout corridor for Robinson Rd/Star Rd. This corridor currently has roundabouts constructed at Robinson & Amity, Robinson & Victory, construction started at Star & Cherry and one planned at the intersection of Robinson & Locust.

The process and schedule for the project are currently as follows:
- Design Consultant Selection – September 2020 (Parametrix Engineering)
- Public Meeting - March 16, 2021 at NHD Office
- Concept Report – Spring 2021
- Preliminary Design – Fall 2021
- Purchase of Right-of-Way –2022
- Final Design – Fall 2022
- Public Meeting – Spring 2023
- Construction – Spring/Summer 2023 (six month duration)
- Bridge Work December 2022 - In progress
- Full Closure February 2023 - In progress
- Estimated project completion June 2023

News Releases and Newsletters
- 01-24-2023 News Release
- 02-24-2021 Newsletter

Graphics and Displays
- Preferred Design Concept

Southside Blvd. & Deer Flat Rd. Roundabout

Location
This project is located at the intersection of Southside Blvd. and Deer Flat Rd. on the south side of Nampa.

Description
The intersection is currently a two-way stop-controlled configuration. East and west traffic on Deer Flat Road is stopped controlled while the north and south traffic is free flow on Southside. The project will reconfigure the intersection into a roundabout.

Need for Project
This intersection is currently configured as a two-way stop-controlled. A roundabout in this location is expected to improve safety and mobility for both the Southside Blvd. and Kuna Rd. corridors. The project will fit the context of a roundabout corridor for Southside Blvd. This corridor currently has roundabouts planned at the intersections of Southside & Lewis, as well as Southside & Kuna.

The process and schedule for the project are currently as follows:
- Design Consultant Selection – September 2020 (Kittelson & Associates)
- Public Meeting – March 4, 2021
- Online Meeting Details:
https://www.zoom.us/join/
Meeting ID: 946 6128 0876
Passcode: 262364
- Concept Report – April 2021
- Preliminary Design – Fall 2021
- Purchase of Right-of-Way – 2022
- Final Design – Fall 2022
- Public Meeting – Spring 2024
- Construction – Spring/Summer 2024 (six month duration)

News Releases and Newsletters

Graphics and Displays
- Southside and Deer Flat Concepts - Concept B Selected

Southside Blvd. & Kuna Rd. Roundabout

Location
This project is located at the intersection of Southside Blvd. and Kuna Rd. on the south side of Nampa.

Description
The intersection is currently a two-way stop-controlled configuration. East and west traffic on Kuna road is stopped controlled while the north and south traffic is free flow on Southside. The project will reconfigure the intersection into a roundabout.

Need for Project
This intersection is currently configured as a two-way stop-controlled. A roundabout in this location is expected to improve safety and mobility for both the Southside Blvd. and Kuna Rd. corridors. The project will fit the context of a roundabout corridor for Southside Blvd. This corridor currently has roundabouts planned at the intersections of Southside & Lewis, as well as Southside & Deer Flat.

The process and schedule for the project are currently as follows:
- Design Consultant Selection – October 2019 (Six Mile Engineering)
- Public Meeting – February 2, 2021
- Online Meeting Details:
https://www.zoom.us/join/
Meeting ID: 978 9076 9215
Passcode: 405157
- Concept Report – March 2021
- Preliminary Design – Summer 2021
- Purchase of Right-of-Way – 2022
- Final Design – Spring 2022
- Public Meeting – Spring 2025
- Construction – Spring/Summer 2025 (six month duration)

News Releases and Newsletters
- 1-14-2021 Newsletter

Graphics and Displays
- Single-Lane Roundabout Alternative 1-07-2021
- Compact Single-Lane Roundabout Alternative 1-07-2021

Roadway Projects

Description of Project Types-

Seal Coat

Seal coat is a film of oil sprayed on the road surface, with a layer of crushed gravel spread on top, and a thin “fog coat” of oil sprayed over the gravel. In some rare situations, it consists of just the “fog coat,” with no gravel. Any cracks in the pavement will receive a separate crack sealing treatment before the seal coat is applied.

While seal coats can be a nuisance, they significantly extend pavement life at relatively low cost by sealing out moisture and the sun’s ultraviolet rays. They also protect pavement from wear and provide necessary traction for vehicle handling.

Nampa Highway District seal coats on a seven-year cycle for main roads, and a ten-year cycle for subdivisions. Each year, the seal coats are programmed as funding allows, with roads of higher functional classification (such as Express Ways and Arterials) receiving higher priority.

Overlay

An overlay is a layer of asphalt pavement, typically about 2” thick, which is placed over an existing road surface. Overlays are typically used when the existing road surface is excessively cracked, rutted, or otherwise distressed, but the underlying gravel base is still in good condition. Overlays are programmed based on several factors, such as pavement condition, functional classification, traffic volumes, and available funding.

Rebuild

Rebuild is the process of grinding the existing asphalt pavement and mixing it with the underlying gravel base, sometimes adding additional gravel, then paving a new asphalt pavement over the top. It is also sometimes called a full-depth rehabilitation. It is done when the existing road surface is excessively cracked, rutted, or otherwise distressed, and the underlying gravel base is also failing. Rebuilds are programmed based on several factors, such as road condition, functional classification, traffic volumes, and available funding.

New Construction

As the name implies, new construction is the building of new roadway or changing the alignment of an existing roadway. New constructions are programmed based on an assessment of the benefit to the overall transportation network as well as available funding.