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 – Winter 2024 to Spring 2025 (six month duration)

News Releases and Newsletters

Northside and Cherry-Concept Design

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 - Winter 2024 to Spring 2025 (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
- Full Closure February 2023
- Project completed May 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 2025 to Summer 2025 (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

Robinson Rd. & Kuna Rd. Roundabout

Location
This project is located at the intersection of Robinson Rd. and Kuna Rd. on the south-east side of Nampa.

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

Need for Project
This intersection is currently configured as a flashing all-way-stop. A roundabout in this location is expected to improve safety and mobility for both the Robinson Rd. and Kuna Rd. corridors. The project will fit the context of a roundabout corridor for Star/Robinson Blvd. The corridor currently has four roundabouts at Star Rd. & Cherry Ln., Robinson Rd. and Airport Rd., Robinson Rd. and Victory Rd., Robinson Rd. and Amity Ave.

The process and schedule for the project are currently as follows:
- Design Consultant Selection – November 2021 (Kittelson & Associates)
- Public Meeting at Nampa Highway District No. 1 – May 24, 2022
- Concept Report – June 2022
- Preliminary Design – Summer 2022
- Purchase of Right-of-Way –2023 to 2024
- Final Design – Anticipated Winter 2024
- Construction – Anticipated Winter 2025 to Spring 2026 (six month duration)

News Releases and Newsletters
- 05-09-2022 Newsletter

Graphics and Displays
- Preferred Design Concept

Can-Ada Rd. & Ustick Rd. Roundabout

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.

Roadway Projects

Locust Lane, McDermott to Nampa City Limits (1.34 mile)

Description: The road will be pulverized, re-shaped and compacted, then resurfaced with new asphalt pavement.

Restrictions: Locust Lane will be closed to all but local traffic needing to reach properties along the project site. Project site will extend from McDermott Road to Nampa City limits. For the first and second stages of construction, east-west traffic will initially be detoured along Greenhurst Road and north-south traffic along McDermott Road or Happy Valley Road. For the third stage of construction, east-west traffic will be detoured along Lake Hazel Road and Greenhurst Road and north-west traffic along McDermott Road or Happy Valley Road.

Tentative Rebuild Schedule: December 2024 – June 2025

Tentative Paving Schedule: Summer 2025

Bennett Road, McDermott to S Powerline (4.01 mile)

Description: The road will be pulverized, re-shaped and compacted, then resurfaced with new asphalt pavement.

Restrictions: [To be determined as project develops]

Tentative Rebuild Schedule: August 2025 – December 2025

Tentative Paving Schedule: Fall 2025

News Releases and Newsletters

Bridge Projects

McCarthy Lateral

Description: This project replaces a portion of McCarthy Lateral crossing in West shoulder at intersection of Hensen Dr. and Woosley Dr.

Restrictions: No full closure. Only shoulder closure and potentially single lane closure.

Tentative Schedule: October to November 2024

Bowmont Road Culverts

Description: This project replaces six culverts on Bowmont Rd. from Happy Valley Rd to Robinson Rd.

Restrictions: Two phase project with closure for half of Bowmont Rd. for each phase. Crossing hard closures will be needed at each phase. East-West traffic will be detoured around to Bennett Rd.

Tentative Schedule: Winter 2024

S. Happy Valley Road Culverts

Description: This project replaces multiple culverts on S. Happy Valley Rd. from Bowmont Rd. south to end.

Restrictions: S. Happy Valley Rd. will be closed to through traffic with access for locals maintained as needed.

Tentative Schedule: Winter 2024

Robinson Rd. and Locust Ln. Roundabout Culverts

Description: This project replaces multiple culverts as required for construction of Robinson Rd. and Locust Ln. Roundabout.

Restrictions: Two phase closure project. First phase will close Locust Ln. from Happy Valley to Robinson Rd.. Second phase will close all 4 legs at Robinson Rd. and Locust Ln.. Crossing hard closures will be needed at each phase. For second phase closure, East-West Traffic will be detoured to Greenhurst Rd. and North-South Traffic will be detoured along McDermott Rd. and Happy Valley Rd.

Tentative Schedule: Winter 2024 to Spring 2025

Studies

Robinson Road Corridor Study

Project Overview

Nampa Highway District No. 1 and the City of Nampa are working together to forecast future road improvements for Robinson Road, between Franklin Road and Deer Flat Road. This area is anticipated to grow substantially over the next 20 years. This study will address future growth and to develop improvement concepts that support convenient and safe travel for all travelers, including drivers, freight, pedestrians and bicyclists.

Please use the link below to submit feedback, comments, and learn the details of this Study.

Robinson Corridor Study

Speed Limits

Speed limits are set by the Board of Commissioners based on engineering investigation, and in accordance with Idaho Code, state prescribed methodology and national standards.

Law
Several sections of Idaho Code address speed limits. The main one dealing with setting speed limits is §49-207(3), which states, “Local authorities…shall determine by an engineering or traffic investigation the proper maximum speed…”

Methodology
The methodology for conducting engineering investigations is prescribed in the Manual for Establishing Speed Limits & Speed Zones in Idaho. It includes analysis of the 85th Percentile and Pace Speeds, crash history, and consideration of roadway characteristics, purpose, and usage. For additional information, please see the “Further Reading” articles below. Methods differ, however, for some residential, school, and new construction locations.

Standards
The engineering investigation methodology follows nationally recognized standards, which have been shown by research and experience to result in lowest crash rates and highest safety.
The Manual for Establishing Speed Limits & Speed Zones in Idaho is published by the Local Highway Technical Assistance Council, which is the state agency that provides uniform standards, practices and training on highway and road issues for cities, counties and highway districts in Idaho.

These standards are also used by the Idaho Transportation Department, most other states, and are acknowledged by the following national entities:

Federal Highway Administration
American Association of State Highway and Transportation Officials
American Traffic Safety Services Association
Institute of Transportation Engineers
Transportation Research Board

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

ITD Speed Limits

Michigan Speed Limits

Institute of Transportation Engineers

Washington_State_County_Engineers

Transportation Plan

The Transportation Plan was adopted in June 2019 and provides a long-range look at future maintenance and system expansion beyond the Five Year Work Plan.

For a copy of the Transportation Plan, click on the link below:

Transportation Plan

Airport/Overland Corridor Study

The Airport/Overland Road Corridor Study was completed in July 2011. It provides a plan for the corridor to be used in guiding the details of future land development and road widening.

The study represents a multi-agency effort to identify a more direct east-west transportation route connecting the Nampa Airport and Garrity Road Interchange in Canyon County with the newly-realigned Overland Road/Ten Mile Road intersection in Ada County.

The study was a collaborative effort led by the City of Nampa, with input from the Nampa Municipal Airport, Nampa Highway District No. 1, City of Meridian, and Ada County Highway District.

To read the full report click on the link here. This file is over 30mb, so it will take a while to download.

Lake Lowell Area Bicycle And Pedestrian Access Plan

Several local entities, including Canyon Highway District No. 4 and Nampa Highway District partnered together with the Federal Highway Administration (FHWA) to create the Lake Lowell Area Bicycle and Pedestrian Access Plan. The project was managed by FHWA and finalized in October 2016. The Plan can be viewed on the FHWA web site or by clicking here:
Questions regarding the Plan may be directed to project manager Susan Law at susan.law@dot.gov.

Western Route Express Way Project

What is it?

The Western Route Express Way is a future route through the southern and western portions of the Treasure Valley to provide traffic an easy and efficient way to get through and out of the valley without first having to travel north through congested urban streets to get to I-84.

Where will it be located?

The route will run through the jurisdictional areas of Canyon Highway District No. 4, Notus-Parma Highway District No. 2, Nampa Highway District No. 1, and Ada County Highway District.

So far, only Nampa Highway District has determined a preferred alignment (see map). Canyon Highway District is in the process of selecting its preferred alignment. It is assumed the west end will eventually connect to I-84 or US-95 somewhere west or north of Caldwell, and the east end to I-84 somewhere southeast of Boise.

When will it be built?

The route is currently in the long-term planning stage. The first task is to determine route location, then preserve it for future development. Except for the Bowmont, Lynnwood to SH-45 project (discussed below), there are no immediate plans for construction.

Most of the route will likely be on existing roadways. Over time, different improvements can be systematically made to the different road segments to allow them to function more as an overall expressway. Such improvements may include reconfiguring intersections to allow free flow, widening shoulders, straightening curves, removing sight obstructions, and building new sections of road to fill in gaps in the route.

As property along the route develops and changes use, the developers may be required to make improvements such as eliminate or reconfigure driveways or build turn bays, turn lanes, or better drainage facilities.

Bowmont, Lynwood to SH-45.

This project was built in 2015 to improve that portion of the Western Route Express Way consisting of Bowmont Road between Lynnwood and SH-45. The purpose was to fix the “dog leg” intersection at SH-45, and straighten the portion between La Pine and SH-45 to run along the section line.

Click Here for Nampa Highway District No. 1's portion of the Western Route

Bid solicitations

Bid Solicitation

Nampa Highway District, in accordance with Title VI of the Civil Rights Act of 1964, 78 Stat. 252, 42 U.S.C. 2000d to 2000d-4 and Title 49, Code of Federal Regulations, Department of Transportation, Subtitle A, Office of the Secretary, Part 21, Nondiscrimination in Federally-assisted programs of the Department of Transportation issued pursuant to such Act, hereby notifies all bidders that it will affirmatively ensure that in any contract entered into pursuant to this advertisement, disadvantaged business enterprises as defined at 49 CFR Part 23 will be afforded full opportunity to submit bids in response to this invitation and will not be discriminated against on the grounds of race, color, national origin, sex, age, or disability in consideration for an award.

Current Solicitations

Past Solicitations

Northside & Cherry Roundabout Project

Bids were opened December 12, 2024 with the following results:

Sunroc Corp: $ 5,277,999.99
Granite Excavation: $ 6,081,491.00
Idaho Material & Construction: $ 5,361,299.25
Dasco of Idaho: $ 5,318,000.00
Idaho Site Works: $ 4,999,630.00
Knife River: $ 5,951,479.00
LaRiviere: $ 4,961,492.00 (Award Pending)

Northside & Cherry Bid Results Summary

Northside & Cherry Roundabout Project [Bids Rejected]

Bids were opened November 7, 2024 with the following results:

Sunroc Corp: $ 5,283,605.00
Idaho Grading & Trucking: $ 5,410,920.80
Granite Excavation: $ 5,987,389.00
Nampa Paving: $ 5,425,152.00
Idaho Material & Construction: $5,858,371.00
Dasco of Idaho: $ 5,495,957.00
Idaho Site Works: $ 5,599,081.95
Knife River: $ 6,046,287.00
LaRiviere: $ 5,283,496.60

Northside & Cherry Bid Results Summary

All bids were rejected.

Robinson and Locust Roundabout Concrete Work

Bids were opened October 31, 2024 with the following results:

Chadez Concrete Inc.: $ 314,384.00 (Award Pending)

Robinson and Locust Roundabout Concrete Work Bid Tabs

Robinson and Locust Electrical Work

Bids were opened October 31, 2024 with the following results:

AME Electric Inc.: $ 155,540.5
Southern Idaho Electric Inc.: $ 142,665.40 (Award Pending)
Quality Electric Inc.: $ 254,810.40
Riverbend Electric: $313,394.40

Robinson and Locust Roundabout Electrical Work Bid Tabs

FY-2024 Misc. Paving Project

Bids were opened Thursday February 29, 2024 with the following results:

Nampa Paving: $ 2,900,000.00
Sunroc Corp: $ 3,385,000.00
Knife River Corp: $ 3,197,500.00
Idaho Materials & Construction: $ 2,510,880.00 (Award Pending)
Theuson: $ 3,109,995.00

2024 Misc. Paving Project Bid Tabs

Robinson and Airport Surplus Property - Parcel 16

2023 Misc. Paving Project

Bids were opened February 9, 2023 with the following results:

Nampa Paving: $ 2,286,439.00
Sunroc Corp: $ 2,908,900.00
Knife River Corp: $ 2,865,865.00
Idaho Materials & Construction: $ 2,374,994.00
Central Paving: $ 2,200,580.68 (Award Pending)

2023 Misc. Paving Project Bid Tabs

Robinson & Airport Roundabout Concrete Work

Separate sealed bids for the construction of the concrete work for the Robinson Road and Airport Road Roundabout, Canyon County, Idaho will be received at the Nampa Highway District No. 1 office at 4507 12th Avenue Road, Nampa, Idaho 83686 until 10:00 a.m. on Tuesday, November 29, 2022, and then at said office publicly opened and read aloud.

Project Documents may be obtained electronically (by email) at no charge by contacting the District Engineer at (208)467-6576 or nick@nampahighway1.com. Recipients will be placed on a Bidders’ List and notified of any Addendums. Project Documents may also be examined at said office between 6:30 a.m. and 4:30 p.m., Monday through Thursday.

Robinson-Airport Construction Plans
Robinson-Airport Bidding Documents- Concrete Work

2023-2025 Preapproved List for Professional Services

Statements of Qualifications (SOQs) were received October 20, 2022 for a Preapproved List for Professional Engineering and Professional Land Survey services for the categories of (1) intersection design, and (2) construction engineering and inspection. Three firms were selected for each category as follows:

Intersection Design:

Kittelson & Associates
Parametrix
Six Mile Engineering

Construction Engineering & Inspection:

HMH Engineering
T-O Engineers
Atlas

2023-2025 Request for Qualifications

Robinson Rd and Dewey Lateral Precast Culvert

Bids were opened September 29, 2022 with the following results:

Oldcastle Infrastructure: $122,765.00 (Award Pending)
Idaho Precast: Incomplete Bid

Stormwater

Federal Stormwater Regulations

Are now in effect that could provide penalties for illegal run-off of stormwater.

Maintain Landscape

Pick up and properly dispose of trimmings and clippings. Don't blow waste into the gutters. Avoid overuse of irrigation water herbicides and pesticides that could be toxic to you and the wildlife in local creeks, ditches, wetlands and drinking supply water. Let's keep our water supplies clean.

Nampa Highway District No.1 Stormwater Documents

MS4 Annual Reports

MS4 Annual Report 2019

MS4 Annual Report 2018

MS4 Annual Report 2017

MS4 Annual Report 2016

MS4 Annual Report 2015

MS4 Annual Report 2014

MS4 Annual Report 2013

MS4 Annual Report 2012

MS4 Annual Report 2011

MS4 Annual Report 2010

Report Stormwater Issues

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Five Year Work Plan

Roadway

Studies

Stormwater

Intersection project

Bridge

Bid Solicitations

Intersection project

Description of Project Types-

Roadway Projects

News Releases and Newsletters

Bridge Projects

Bid Solicitation

Current Solicitations

Past Solicitations

Federal Stormwater Regulations

Maintain Landscape

Nampa Highway District No.1 Stormwater Documents

MS4 Annual Reports

Other Stormwater Documents

Report Stormwater Issues