Project Information

Project Description

The purpose of this project is to evaluate and improve user safety at two of Flagstaff's major intersections: S Milton Rd/W University Ave and S Milton Rd/Route 66. These intersections were selected using the Arizona Department of Transportation (ADOT) network screening which determined the intersections as "hotspots" due to the high-risk of crashes at those locations. A frequency of incidents involving road users and pedestrians indicate additional safety measures are required at both intersections. Practical solutions and improvements were identified to reduce the risk of incidents while maintaining efficiency at both intersections.

Project Location

Project Constraints

Project Tasks

Gantt Chart

Project Staffing

Cost of
Engineering Services

Project Location

Project Location #1 is located at the intersection of S Milton Rd and W University Ave in Flagstaff, Arizona. The intersection currently has three existing crosswalks with a pedestrian underpass.

Project Location #2 is located at the intersection of S Milton Rd and Route 66 in Flagstaff, Arizona. There are currently two existing crosswalks in the intersection.

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Project Constraints

Schedule

Regulations and Standards

This project is being completed in Flagstaff, Arizona which is under the jurisdictions of the ADOT, City of Flagstaff, and FHWA agencies. These agencies each have their own specified regulations which our team needs to follow in order to complete the project within regulations.

The timeframe to complete this project is not unlimited and there are multiple project deliverable deadlines which the team needs to meet. This creates scheduling constraints and forces the team to operate efficiently and without setbacks when working on the project.

Intersection Geometry

Both of our project intersections are pre-existing developments which cannot be easily changed. This forces us to generate alternatives which improve the already in place geometry, while maintaining safety and efficiency for all road users.

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Project Tasks

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Gantt Chart

The total duration of the project will be 191 days based on a 5-day work week schedule. The starting date is set to be 10/30/2025. The ending date of the project is expected to be 05/08/2025.

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Project Staffing

Staffing Matrix

This project has an estimated
total of 606 hours to complete every task and subtask listed. The senior engineer and project
manager will oversee most tasks and support the team when needed. The traffic and roadway engineers will complete most
of the technical content of this project, while the Engineer in training will support the TE and RE
while also helping develop the project deliverable documents. Overall, the majority of the project hours are split
between the roadway engineer and traffic engineer. The Project manager and senior engineer have more hours in project management and overseeing technical tasks. The EIT will support the other team members in most tasks and will be present for all field studies and team meetings.

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Cost of Engineering Services

The cost of engineering services below demonstrates the cost of the specified sections of the project along with their respective cost. Personnel along with supplies and equipment is taken into consideration for the total cost.

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Project Description

Project Location

Project Location #1 is located at the intersection of S Milton Rd and W University Ave in Flagstaff, Arizona.​ The intersection currently has three existing crosswalks with a pedestrian underpass.

Project Location #2 is located at the intersection of S Milton Rd and Route 66 in Flagstaff, Arizona. There are currently two existing crosswalks in the intersection. ​

Project Constraints

Schedule

Regulations and Standards

This project is being completed in Flagstaff, Arizona which is under the jurisdictions of the ADOT, City of Flagstaff, and FHWA agencies. These agencies each have their own specified regulations which our team needs to follow in order to complete the project within regulations.

The timeframe to complete this project is not unlimited and there are multiple project deliverable deadlines which the team needs to meet. This creates scheduling constraints and forces the team to operate efficiently and without setbacks when working on the project.

Intersection Geometry

Both of our project intersections are pre-existing developments which cannot be easily changed. This forces us to generate alternatives which improve the already in place geometry, while maintaining safety and efficiency for all road users.

Project Tasks

Task 1: Background Research

Task 1.1: Review Previous RSAsTask 1.2: Obtain Previous Crash Data

Task 2: Site Visit

This task will involve visiting both project intersections to understand the current up-to-date conditions of the intersections. An assessment and analysis of the existing infrastructure, including geometry, ped/bike facilities, and signal timing, of the project sites will be conducted.

Task 2.1: Drone SurveyTask 2.2: Existing GeometryTask 2.3: Pedestrian and Bike FacilitiesTask 2.4: Overall Safety AnalysisTask 2.5: Signal Timing Analysis

Task 3: Traffic Studies

Task 3.1 & 3.3: Traffic Volume Study (Fall/Winter)Task 3.2 & 3.4: Pedestrian Count Study (Fall/Winter)Task 3.3 & 3.6: Bike and Multimodal Use Study (Fall/Winter)Task 3.6: Crash Data Analysis

In this task, a series of traffic studies will be conducted to collect traffic-related data at the project intersections. This data will be used to assess the current peak-hour operations of the intersections and identify potential safety risks.

Task 4: Generate Alternatives

This task will consist of compiling results from completed research and traffic studies at the project intersections to generate proposed safety alternatives that could be implemented. A decision matrix will be used to evaluate and rank the proposed alternatives.

Task 4.1: Analyze Traffic Study Results Task 4.2: Brainstorm Potential AlternativesTask 4.3: Crash Modification FactorsTask 4.4: Decision MatrixTask 4.5: Short/Medium/Long Term Recommendations

Task 5: RSA Report

Task 5.1: Finalize Recommendations Task 5.2: Compile all Studies, Data, and Alternatives

This task will consist of compiling the previously completed work to build a complete Road Safety Assessment Report.

Task 6: Project Impacts

This task will consist of identifying and analyzing the impacts this project will have on the world around us including the Environmental, Economic, and Social Impacts that are likely to be seen.

Task 6.1: Environmental Impacts Task 6.2: Economic ImpactsTask 6.3: Social Impacts

Task 7: Project Deliverables

Task 7.1: 30% Report Task 7.2: 60% Report Task 7.3: 90% Report Task 7.4: Final Report Task 7.5: Project Website

The following tasks are deliverables associated with the CENE 486 class and will be submitted by their respective deadlines.

Task 8: Project Management

Task 8.1: Resource Management Task 8.2: Team MeetingsTask 8.3: Client and TA MeetingsTask 8.4: GI MeetingsTask 8.5: Schedule Management

This task will consist of necessary sub-tasks that will help plan, coordinate, and monitor the progress of the project. This task will also ensure that the project meets quality standards and is completed on time.

Gantt Chart

The total duration of the project will be 191 days based on a 5-day work week schedule. The starting date is set to be 10/30/2025. The ending date of the project is expected to be 05/08/2025.

Project Staffing

Staffing Matrix

Cost of Engineering Services

The cost of engineering services below demonstrates the cost of the specified sections of the project along with their respective cost. Personnel along with supplies and equipment is taken into consideration for the total cost.

Project Location #1 is located at the intersection of S Milton Rd and W University Ave in Flagstaff, Arizona. The intersection currently has three existing crosswalks with a pedestrian underpass.

Project Location #2 is located at the intersection of S Milton Rd and Route 66 in Flagstaff, Arizona. There are currently two existing crosswalks in the intersection.

Task 1.1: Review Previous RSAs
Task 1.2: Obtain Previous Crash Data

Task 2.1: Drone Survey
Task 2.2: Existing Geometry
Task 2.3: Pedestrian and Bike Facilities
Task 2.4: Overall Safety Analysis
Task 2.5: Signal Timing Analysis

Task 3.1 & 3.3: Traffic Volume Study (Fall/Winter)
Task 3.2 & 3.4: Pedestrian Count Study (Fall/Winter)
Task 3.3 & 3.6: Bike and Multimodal Use Study (Fall/Winter)
Task 3.6: Crash Data Analysis

Task 4.1: Analyze Traffic Study Results
Task 4.2: Brainstorm Potential Alternatives
Task 4.3: Crash Modification Factors
Task 4.4: Decision Matrix
Task 4.5: Short/Medium/Long Term Recommendations

Task 5.1: Finalize Recommendations
Task 5.2: Compile all Studies, Data, and Alternatives

Task 6.1: Environmental Impacts
Task 6.2: Economic Impacts
Task 6.3: Social Impacts

Task 7.1: 30% Report
Task 7.2: 60% Report
Task 7.3: 90% Report
Task 7.4: Final Report
Task 7.5: Project Website

Task 8.1: Resource Management
Task 8.2: Team Meetings
Task 8.3: Client and TA Meetings
Task 8.4: GI Meetings
Task 8.5: Schedule Management