BUILD Grant application
This project will reconstruct 4.0 miles of Manufacturing Drive and Bluff Boulevard, a main corridor within the micropolitan community of Clinton in Eastern Iowa, into complete streets that will widen the corridor, introduce a roundabout, separate sewer and sanitary lines and include the planting of green infrastructure to capture rainwater and filter stormwater.
The project will reduce runoff volume and improve water quality, improve signaling, add sidewalks and a bicycle route, add transit shelters and will include intersection modifications for this vital artery of rural Clinton, Iowa.
Benefit Cost Analysis
A Benefit Cost Analysis (BCA) was performed for the Drive to Prosperity Corridor. The project site is a major arterial through the heart of Clinton and will help get people and goods to their destinations more efficiently. The project also supports connectivity to the new bike pedestrian trail system the currently has a gap within the project area.
The proposed project will result in a net present value total cost of $24,376,228. The total benefits to the project are estimated to be a net present value of $49,648,464. This results in a Benefit Cost Ratio of 2.04. The project’s costs and benefits are documented below and the assumptions used in the calculations can be found in the Excel Workbook.
Reducing the amount of stormwater entering the outdated sewer system is critical to mitigate this health hazard and improve the Mississippi River’s water quality. Clinton proposes to increase the storm capacity and replace an outdated sanitary sewer system. When discounted over 25 years (at 7% rate), these improvements are expected to provide a $1.10 million benefit.
Clinton’s BCA estimates that the community will save approximately $2,221,695 in crashes per year, beginning in 2022. When discounted over 24 years (7% rate), this amounts to a $22.26 million benefit.
Some of the Manufacturing Drive and Bluff Boulevard pavement sections are over 100 years old. Maintenance is scheduled approximately every 15 years, with the next maintenance effort scheduled for 2023 and 2025. Given that the project includes extensive roadway rehabilitation and streetscaping (reflected in costs), this maintenance can be deferred until 2038 and 2040. When discounted over 25 years (at 7% rate), this deferred maintenance provides a modest benefit of $1.31 million.
The project will help residents and commuters avoid the cost of owning a car, particularly low-income households in the opportunity zone along Bluff Boulevard. According to AAA, owning and operating a car costs $8,849 per year (AAA’s 2018 Your Driving Costs study). Each vehicle that the project helps an individual avoid owning or using means significant funds are available for other expenses. Providing transportation choices such as improved transit, better walkability and bike lanes helps residents decide to forgo owning a personal vehicle and generates significant local purchasing power.
Travel time savings will also contribute to quality of life. Less time spent behind the wheel will provide residents with greater opportunities to enjoy leisure activities. Approximately 369,969 hours will be saved by cars and 15,415 hours will be saved by trucks annually (increasing yearly with projected volume increases) due to improving the corridor and synchronizing the signals and connecting them with fiber. When discounted over 24 years (at 7% rate), this travel time savings equates to a $17.10 million benefit.
The table below provides an overview of the current conditions along the project corridor and summarizes some of the project’s elements and associated benefits.
Total cost of the entire project is estimated at $29.4 million, which includes engineering, construction, and property acquisition.