Roads under construction

Road construction and water main replacement is under way

The City of Northville’s 2020 Local Street Rehabilitation and Water Main Replacement programs began mobilization the week of May 4. Bidigare Contractors, of Plymouth, is working on the water main replacement while Nagle Paving Company, of Novi, is doing the road reconstruction and rehabilitation.

The City’s Public Works Department (DPW) and staff from the City’s engineering consultants, are overseeing these projects. Residents will be notified no less than 24 hours in advance of the following actions: road construction to begin; temporary water system shut offs; limitations to on-street parking; and no access to driveways. The contractors are anticipated to work between the hours of 7 a.m. to 8 p.m.

Bidigare began work on W. Cady and N. Rogers on May 4. Residents may notice work underway, including mobilization, pipe fusion and excavation.

Nagle’s work began on May 7 at Old Baseline (between N. Center and Novi Street). Despite a late start due to the Covid-19 pandemic, work road is going smoothly.  Weekly updates are posted on the Fleis & Vandenbrink's customer portal.

“We understand construction may interfere with our resident’s daily activities, and, in all road and utility construction projects, we do our best to ensure as little down time and inconvenience as possible,” said Loyd Cureton, DPW director. “We appreciate your cooperation and your patience during the construction of these projects.”

If you have any questions or require any special accommodations, please contact the City’s engineering consultants, Fleis & VandenBrink’s onsite representative at 586-899-7015 or their office at 248-536-1997.

To view weekly updates of road construction and related projects, visit the Fleis & Vandenbrink's customer portal

Roadwork and water/sewer repairs awarded for 2020

In mid-February, the City of Northville requested bids for road replacement and repairs for the 2020 Local Road Reconstruction and Rehabilitation Program. Eight companies responded. After vetting those bids, it was determined that Nagle Paving, of Novi, had the best pricing and qualifications. 

The company received a green light on three proposals from City Council at its March 16 meeting: 

1) Replace water and sanitary sewer mains and reconstruct the streets (2.44 lane miles) after those infrastructure repairs are completed at a cost of $1,820,805. Six streets will be repaired. 

2) Complete approximately two (2) miles of street reconstruction at a total cost of $1,491,595 on four streets. 

3) Perform mill and fill work on 1.87 miles of surface on three streets at a cost of $757,400. 

Bidigare Contractors, of Plymouth Twp., was awarded the contract for the 2020 Water Main Replacement program in the amount of $718,210 – a bid that was 26% lower than the second low bidder. The company will use a “pipe bursting” technique that replaces pipe in-situ in 300-foot sections. As a result, water to residents will only be off for a few hours at a time. The water and sanitary sewer mains on Grace Street, Maplewood St. to Hill St. will be done through Nagle, since the water and sanitary sewer lines will require open trenching for replacement. Please note: No work on the water/sewer lines will be done during the COVID-19 governor's order 2020-21. 

View the chart to see which roads are included in these projects. Baseline Rd. rehabilitation project from the 2019 bid will be part of this year’s construction season. 

The City is working with engineering consultant Fleis & VandenBrink on the design and construction oversight of these projects.

Residents on the streets slated for repair will be notified about work schedules, detours and parking restrictions via fliers, the City’s website and posts on social media.

This construction work is the result of voter approval in 2018 of the issuance of $3,050,000 in bonds, paid for over 10 years to finance street improvements.
Plan to prioritize road repair and replacement
There’s a science to determining how roads should be repaired or replaced, balanced by practicality and traffic flow. 

The process of evaluation and analysis starts with rating roads using the Pavement Surface Evaluation and Rating (PASER) system, an industry-standard assessment in which trained analysts drive each segment of road (from intersection to intersection) and score it from one (the worst) to 10 (a new road). Roads rated 7 or 8 may require routine maintenance, such as crack sealing or minor patching. Roads rated 4-6 are considered to be in “fair” condition and may need preventive maintenance, such as an overlay or joint repairs. Roads rated less than 4 are candidates for extensive repairs or reconstruction. 

After each segment is rated, Roadsoft, a pavement management software, is used to define the type of repair, its cost and the allocated budget, to determine the most cost-effective way to attain the best overall condition for the roadway network (roads owned by the City). The software also defines how many lane miles of each type of repair must be done to attain the long-term condition goals for the roadway network. The City aims to attain an average rating of 6 OCI (Overall Condition Index) with millage funding. 

To determine which roads are the best candidates for the extensive repairs, a Network Priority Rating (NPR) is calculated for each pavement segment. Calculations are based on these five factors: PASER rating, pavement priority, pavement use, segment length, and pavement classification. 

Pavement Priority is classified as: 1) low – only residential and mostly local residents; 2) medium – periodic commercial, frequent residential traffic; and 3) high – frequent commercial and high use of local traffic. 

Pavement use has four categories: major residential, major commercial and local residential and local commercial. It is related to the location, degree of utilization and expected traffic type/frequency of a particular road segment. 

street with patched potholestThe segment length uses calculations developed by the state in its Roadsoft program. 

Pavement classification – There are basically five categories: 1) asphalt standard duty, 2) asphalt heavy duty, 3) concrete standard duty, 4) concrete heavy duty, and 5) asphalt overlay composite (asphalt over concrete). Standard vs. heavy-duty is based in part on the thickness of the pavement.

Once the NPR is calculated, all segments that are candidates for a particular treatment are determined, based on pavement type (asphalt, concrete, or composite) and PASER rating. These segments are then evaluated using NPR to determine a rating, with the highest values given top priority. Segments are then chosen for repair until reaching the total lane miles of treatment recommended in a particular year. 

For example, this shows one year of the City’s long-term strategy:

Type of road Repair Lane miles

 Asphalt Reconstruction   .252  
 Asphalt 3” Mill and Overlay   .256  
 Asphalt Crack Seal   4.062  
 Composite 3” Mill and Overlay
 Composite Crack Seal
 Concrete Asphalt Overlay   .330  

Types of repairs that will improve the road network

Upgrades to roads include reconstruction, mill and overlay, and crack seal repairs for roads made of asphalt, composite and concrete. Reconstruction is a complete tear-down and rebuild; mill and overlay is a process of grinding down the top layer – the wearing layer – and setting down new layers of material (allowing the base of the road to last longer); and crack-seal repairs are used to apply asphalt to a crack to prevent water from seeping into the pavement and potentially creating a pothole. 

When scheduling repairs or replacement, practical aspects must be taken into account. For example, when major water main or sewer work is scheduled in a given year, major road repairs on that same section of road would be made immediately following that repair. 

Once all streets to be repaired are determined for each year, a manual review is conducted to balance the location of repairs with other construction planned or underway (e.g. construction of new homes or a commercial building). That way, repairs don’t create gridlock in one part of town. With proper planning, multiple repairs can be done sequentially.

What is the street millage costing you?

Property owners in Northville can assess their cost for the street bond by using an online calculator. You can find your taxable value on your tax statement or on the BSA website. The taxable value is no more than half of the market value. Using a calculator, multiply your taxable value by 0.00098.

Calculate Your Estimated Cost

To determine your estimated additional cost for the street bond, multiply your home's taxable value by .00098.


Home's Taxable Value $125,000

Multiply $125,000 x .00098 $122.50

Website portal for road information
Updates on road construction will be posted regularly on the information portal of Fleis & VandenBrink. View the web page here. May 2020 projects are detailed here
  • Map of road construction projects
Road with cracks and crumbling asphalt